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Islamic conquest of Persia



 
 
The Islamic conquest of Persia
Persian Empire

The 'Persian Empire' was a series of successive Iranian or Persianization empires that ruled over the Iranian plateau, the original Persian homeland, and beyond in Southwest Asia, South Asia, Central Asia and the Caucasus....
 (633–656) led to the end of the Sassanid Persian Empire and the eventual extirpation of the Zoroastrian
Zoroastrianism

Zoroastrianism is the religion and philosophy based on the teachings ascribed to the prophet Zoroaster, after whom the religion is named. The term Zoroastrianism is in general usage, essentially synonymous with Mazdaism, i.e., the worship of Ahura Mazda, exalted by Zoroaster as the supreme divine authority....
 religion in Persia
Iran

Iran , officially the Islamic Republic of Iran and formerly known internationally as Persian Empire until 1935, is a country in Central Eurasia, located on the northeastern shore of the Persian Gulf and the southern shore of the Caspian Sea....
. However, the achievements of the previous Persian civilizations were not lost, but were to a great extent absorbed by the new Islam
Islam

Islam is a Monotheism, Abrahamic religion originating with the teachings of the Prophets of Islam Muhammad, a 7th century Arab religious and political figure....
ic polity.

Most Muslim historians have long offered the idea that Persia, on the verge of the Arab invasion, was a society in decline and decay and thus it embraced the invading Arab armies with open arms. This view is not widely accepted however.






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The Islamic conquest of Persia
Persian Empire

The 'Persian Empire' was a series of successive Iranian or Persianization empires that ruled over the Iranian plateau, the original Persian homeland, and beyond in Southwest Asia, South Asia, Central Asia and the Caucasus....
 (633–656) led to the end of the Sassanid Persian Empire and the eventual extirpation of the Zoroastrian
Zoroastrianism

Zoroastrianism is the religion and philosophy based on the teachings ascribed to the prophet Zoroaster, after whom the religion is named. The term Zoroastrianism is in general usage, essentially synonymous with Mazdaism, i.e., the worship of Ahura Mazda, exalted by Zoroaster as the supreme divine authority....
 religion in Persia
Iran

Iran , officially the Islamic Republic of Iran and formerly known internationally as Persian Empire until 1935, is a country in Central Eurasia, located on the northeastern shore of the Persian Gulf and the southern shore of the Caspian Sea....
. However, the achievements of the previous Persian civilizations were not lost, but were to a great extent absorbed by the new Islam
Islam

Islam is a Monotheism, Abrahamic religion originating with the teachings of the Prophets of Islam Muhammad, a 7th century Arab religious and political figure....
ic polity.

Most Muslim historians have long offered the idea that Persia, on the verge of the Arab invasion, was a society in decline and decay and thus it embraced the invading Arab armies with open arms. This view is not widely accepted however. Some authors have for example used mostly Arab sources to illustrate that "contrary to the claims of Muslim apologists, Iranians in fact fought long and hard against the invading Arabs." This view further more holds that once politically conquered, the Persians began engaging in a culture war of resistance and succeeded in forcing their own ways on the primitive and ape-like Arabs.

As Bernard Lewis
Bernard Lewis

Bernard Lewis is a British-American historian, Orientalist, and pundit . He is the Cleveland E. Dodge Emeritus of Near Eastern Studies at Princeton University....
 has quoted
"These events have been variously seen in Iran: by some as a blessing, the advent of the true faith, the end of the age of ignorance and heathenism; by others as a humiliating national defeat, the conquest and subjugation of the country by foreign invaders. Both perceptions are of course valid, depending on one's angle of vision."


Persia Before the Conquest

Since the 1st century BC, the border between the Roman
Roman Empire

The Roman Empire was the Roman Republic phase of the Ancient Rome, characterised by an autocracy form of government and large territorial holdings in Europe and around the Mediterranean....
 (later Byzantine
Byzantine Empire

Byzantine Empire and Eastern Roman Empire are conventional names used to describe the Roman Empire during the Middle Ages, centered on its capital of Constantinople....
) and Parthian
Parthian Empire

The Arsacid Empire , was a significant political and cultural power in the ancient Near East, and a counterweight to the Roman Empire in the region....
 (later Sassanid dynastic
Sassanid Empire

The Sassanid Empire or Sassanian Dynasty is the name of the last pre-Islamic Iranian empire. It was one of the two main powers in Western Asia for a period of more than 400 years....
) empires had been the Euphrates
Euphrates

The Euphrates is the western of the two great rivers that define Mesopotamia which flows from Anatolia....
 river. The border was constantly contested. Most battles, and thus most fortifications, were concentrated in the hilly regions of the north, as the vast Arabian or Syrian Desert
Syrian Desert

The Syrian Desert , also known as the Syro-Arabian desert is a combination of steppe and true desert that is located in the northern Arabian Peninsula....
 (Roman Arabia) separated the rival empires in the south. The only dangers expected from the south were occasional raids by nomadic Arab
Arab

An Arab is a person who Identity as such on linguistic or cultural grounds. The plural form, Arabs , refers to the Ethnocultural group at large....
 tribesmen. Both empires therefore allied themselves with small, semi-independent Arab principalities, which served as buffer states and protected Byzantium and Persia from Bedouin
Bedouin

The Bedouin, , are predominantly Muslim, desert-dwelling Arab nomadic pastoralist, or previously nomadic group, found throughout most of the desert belt extending from the Atlantic coast of the Sahara via the Western Desert , Sinai Peninsula, and Negev to the Arabian Desert....
 attacks. The Byzantine clients were the Ghassanids; the Persian clients were the Lakhmids. The Ghassanids and Lakhmids feuded constantly — which kept them occupied, but did not greatly affect the Byzantines or Persians.

In the 6th and 7th centuries, various factors destroyed the balance of power that had held for so many centuries.

Balance Between Persia and Byzantium Swings Wildly

See also: Fall of Sassanid dynasty

The Persian ruler Khusrau II (Parviz) defeated a dangerous rebellion within his own empire (the Bahram Chobin
Bahram Chobin

Lieutenant General Bahram Chobin was a famous Eran spahbod during Khosrau II of Persia's rule in Sassanid Iran. Descended from the House of Mihran, one of the Seven Parthian clans, his first great victory came in Herat in 589, which is reported in a number of sources....
's rebellion). He afterwards turned his energies outwards, upon the traditional Byzantine enemies in the Roman-Persian Wars
Roman-Persian Wars

The Roman–Persian Wars were a series of conflicts between the Greco-Roman world and two successive List of Iranic states and empires. Contact between Parthia and the Roman Republic began in 92 BC; wars began under the late Republic, and continued through the Roman Empire and Sassanid Empires....
. For a few years, he succeeded gloriously. From 612 to 622, he extended the Persian borders almost to the same extent that they were under the Achaemenid dynasty(550–330 BC), capturing cities of Antioch
Antioch

Antioch on the Orontes was an ancient city on the eastern side of the Orontes River. It is near the modern city of Antakya, Turkey.Founded near the end of the 4th century BC by Seleucus I Nicator, one of Alexander the Great's generals, Antioch eventually rivaled Alexandria as the chief city of the nearer East and was a cradle of gentile hi...
, Damascus
Damascus

Damascus is the capital and largest city of Syria. It is List of oldest continuously inhabited cities and its current population is estimated at about 4,000,000....
, Alexandria
Alexandria

Alexandria , with a population of 4.1 million, is the second-largest city in Egypt, and is the country's largest seaport, serving about 80% of Egypt's imports and exports....
, and Jerusalem
Jerusalem

Jerusalem is the capital of Israel and its List of Israeli cities in both population and area, with a population of 747,600 residents over an area of if Positions on Jerusalem East Jerusalem is included....
.

The Byzantines regrouped and pushed back in 622 under Heraclius
Heraclius

Flavius Heraclius was a Byzantine Emperor, who ruled the Byzantine Empire for over thirty years, from October 5, 610 to February 11, 641. His rise to power began in 608, when he and his Heraclius the Elder, the viceregal Exarchate of Africa, successfully led a revolt against the unpopular usurper Phocas....
. Khusrau was defeated at the Battle of Nineveh
Battle of Nineveh

There were two battles named Battle of Nineveh:*Battle of Nineveh *Battle of Nineveh ...
 in 627, and the Byzantines recaptured all of Syria
Syria

Syria , officially the Syrian Arab Republic , is an Arab-majority country in Southwest Asia, bordering Lebanon and the Mediterranean Sea to the west, Israel to the southwest, Jordan to the south, Iraq to the east, and Turkey to the north....
 and penetrated far into the Persian provinces of Mesopotamia
Mesopotamia

Mesopotamia is the area of the Tigris-Euphrates river system, along the Tigris and Euphrates rivers, largely corresponding to modern Iraq, as well as some parts of northeastern Syria, some parts of southeastern Turkey, and some parts of the Khuzestan Province of southwestern Iran....
. In 629, Khusrau's son agreed to peace, and the border between the two empires was once again the same as it was in 602.

Assassination of Khusrau II and a Succession of Weak Rulers

Khusrau II was assassinated in 628 and as a result, there were numerous claimants to the throne; from 628 to 632 there were ten kings and queens of Persia. The last, Yazdegerd III, was a grandson of Khusrau II and was said to be a mere child. However, no date of birth is known.

Revolt of the Arab Client States

The Byzantine clients, the Arab Ghassanids
Ghassanids

The Ghassanids were a group of South Arabian Christian tribes that emigrated in the early 3rd century from Yemen to the Hauran in southern Syria, Jordan and the Holy Land where they intermarried with Hellenized Ancient Rome settlers and Greek-speaking Early Christian communities....
, converted to the Monophysite form of Christianity
Christianity

Christianity is a Monotheistic religion #Christian view religion centered on the life and teachings of Jesus as New Testament view on Jesus' life....
, which was regarded as heretical
Heresy

Heresy is an introduced change to some system of belief, especially a religion, that conflicts with the previously established canon of that belief....
 by the established Byzantine Orthodox Church
Eastern Orthodox Church

The Eastern Orthodox Church is the second largest single Christian communion in the world with an estimated 225 million members worldwide. It is considered by its adherents to be the Four Marks of the Church established by Jesus Christ and his Apostles nearly 2000 years ago....
. The Byzantines attempted to suppress the heresy, alienating the Ghassanids and sparking rebellions on their desert frontiers.

The Lakhmids
Lakhmids

The Lakhmids , Banu Lakhm , Muntherids , were a group of Arab Christians who lived in Southern Iraq, and made al-Hirah their capital in ....
 also revolted against the Persian king Khusrau II. Al-Noman III (son of Al-Monder IV), the first Christian Lakhmid king, was deposed and killed by Khusrau II, because of his attempt to throw off the Persian tutelage. After Khusrau's assassination, the Persian Empire fractured and the Lakhmids
Lakhmids

The Lakhmids , Banu Lakhm , Muntherids , were a group of Arab Christians who lived in Southern Iraq, and made al-Hirah their capital in ....
 were effectively semi-independent.

It is tenable that weakening the Lakhmids
Lakhmids

The Lakhmids , Banu Lakhm , Muntherids , were a group of Arab Christians who lived in Southern Iraq, and made al-Hirah their capital in ....
 and the Ghassanids
Ghassanids

The Ghassanids were a group of South Arabian Christian tribes that emigrated in the early 3rd century from Yemen to the Hauran in southern Syria, Jordan and the Holy Land where they intermarried with Hellenized Ancient Rome settlers and Greek-speaking Early Christian communities....
 bulwark contributed to the consequent Arab-Muslim breakthrough into what is today known as Iraq and Jordan.

During Prophet Muhammad's Life

After the Treaty of Hudaybiyyah
Treaty of Hudaybiyyah

The Treaty of Hudaybiyya is the treaty that took place between the state of Medina and the Quraishi tribe of Mecca in March 628CE ....
 in 628, the Prophet Muhammad
Muhammad

Muhammad Patronymic#Arabic Abd Allah ibn Abd al Muttalib , is the founder of the Major religious groups of Islam and is regarded by Muslims as a Rasul and prophet of , the last and the greatest law-bearer in a series of prophets....
 sent many letters to the princes, kings and chiefs of the various tribes and kingdoms of the time inviting them to convert to Islam. These letters were carried by ambassadors to Iran
Iran

Iran , officially the Islamic Republic of Iran and formerly known internationally as Persian Empire until 1935, is a country in Central Eurasia, located on the northeastern shore of the Persian Gulf and the southern shore of the Caspian Sea....
, Byzantium
Byzantium

Byzantium was an Ancient Greece city, which was founded by Greeks colonists from Megara in 667 BC and named after their king Byzas or Byzantas ....
, Ethiopia
Ethiopia

Ethiopia , officially the Federal Democratic Republic of Ethiopia, is a landlocked country situated in the Horn of Africa. Ethiopia is bordered by Eritrea to the north, Sudan to the west, Kenya to the south, Somalia to the east and Djibouti to the northeast....
, Egypt
Egypt

Egypt is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Western Asia. Covering an area of about , Egypt borders the Mediterranean Sea to the north, the Gaza Strip and Israel to the northeast, the Red Sea to the east, Sudan to the south and Libya to the west....
, Yemen
Yemen

Yemen , officially the Republic of Yemen is an Arab country located on the Arabian Peninsula in Southwest Asia. Yemen has an estimated population of more than 23 million people and is bordered by Saudi Arabia to the North, the Red Sea to the West, the Arabian Sea and Gulf of Aden to the South, and Oman to the east....
, and Hira
Hira (disambiguation)

Hira may mean:*Hira, a cave where Muhammad received his first revelations from Allah.*Al-Hirah an ancient Arab city in Iraq.*Hira , an old Jewish ghetto in Tunis, see History of the Jews in Tunisia...
 (Iraq) on the same day. This assertion has been cast into scrutiny by some modern historians of Islam--notably Grimme and Caetani. Particularly in dispute is the assertion that Khosrau II received a letter from Muhammad, as the Sassanid court ceremony was notoriously intricate, and it is unlikely that a letter from what at the time was a minor regional power would have reached the hands of the Shahanshah. With regards to Iran, Muslim histories further re-count that at the beginning of the seventh year of migration, Muhammad appointed one of his officers, Abdullah Huzafah Sahmi Qarashi, to carry his letter to Khosrau II
Khosrau II

Khosrau II or Khosrow II was the twenty-second Sassanid Empire King of Persia from 590 to 628. He was the son of Hormizd IV and grandson of Khosrau I ....
 inviting him to Islam:

"In the name of God, the Beneficent, the Merciful. From Muhammad, the Messenger of God, to the great Kisra of Iran. Peace be upon him, who seeks truth and expresses belief in God and in His Prophet and testifies that there is no god but God and that He has no partner, and who believes that Muhammad is His servant and Prophet. Under the Command of God, I invite you to Him. He has sent me for the guidance of all people so that I may warn them all of His wrath and may present the unbelievers with an ultimatum. Embrace Islam so that you may remain safe. And if you refuse to accept Islam, you will be responsible for the sins of the Magi."


There are differing accounts of the reaction of Khosrau II
Khosrau II

Khosrau II or Khosrow II was the twenty-second Sassanid Empire King of Persia from 590 to 628. He was the son of Hormizd IV and grandson of Khosrau I ....
. Nearly all assert that he destroyed the letter in anger; the variations concentrate on the extent and detail of his response.

Rise of the Islamic Empire

By the time of Muhammad's death in 632, most of what is now considered Arabia was united under the new religion of Islam
Islam

Islam is a Monotheism, Abrahamic religion originating with the teachings of the Prophets of Islam Muhammad, a 7th century Arab religious and political figure....
. However, as Fred Donner argues in his 1981 book, The Early Islamic Conquests, Arabic
Arabic language

Arabic is a Central Semitic language, thus related to and classified alongside other Semitic languages languages such as Hebrew language and Aramaic language....
-speaking nomads or villagers roamed over or settled on the edge of the Syrian steppe
Steppe

In physical geography, a steppe , pronounced , is a grassland plain without trees . The prairie can be considered a steppe. It may be semi-desert, or covered with Poaceae or shrubs or both, depending on the season and latitude....
 as well. Any regime
Regime

The word regime refers to a set of conditions, most often of a political nature. It may also be used synonymously with "wiktionary:regimen", for example in the phrases "exercise regime" or "medical regime"....
 that aimed to unite all Arabs would have to conquer the Syrian steppe. Under Muhammad's successor Abu Bakr
Abu Bakr

Abu Bakr Abdallah ibn Abi Quhafa As-Siddiq was an early convert to Islam and a senior companion of the Prophets of Islam Muhammad. Throughout his life, Abu Bakr remained a friend and confidante of Muhammad....
, the first caliph
Caliph

The Caliph is the head of state in a Caliphate, and the title for the leader of the Islamic Ummah, an Islamic community ruled by the Shari'ah....
, the Muslims first re-established their control over Arabia (the Ridda Wars
Ridda wars

The Ridda wars , also known as the Wars of Apostasy, were a set of military campaigns against the rebellion of several Arabic tribes against the Caliph Abu Bakr during 632 and 633 AD, following the death of Muhammad....
) and then launched campaigns against the remaining Arabs of Syria and Palestine
Palestine

Palestine is a name which has been widely used since Roman times to refer to the region between the Mediterranean Sea and the Jordan River. It is derived from a name used already much earlier for a narrower geographical region, mainly along the coastal region....
.

However, this put the nascent Islamic empire on a collision course with the Byzantine and Sassanid empires, which had been disputing these territories for centuries. The wars soon became a matter of conquest, rather than mere consolidation of the Arab tribes.

Islamic Conquest of Mesopotamia

The collapse of the Sassanid polity after the death of Khusrau II left the Persians in a weak position vis-a-vis Arab invaders. At first the Muslims merely attempted to consolidate their rule over the fringes of the desert and the Lakhmid Arabs. The border town of Hira fell to the Muslims in 633. The Sassanids had reorganized under a new king, Yazdegerd III.

The main military commander of the Muslims, Khalid ibn al-Walid
Khalid ibn al-Walid

Khalid ibn al-Walid also known as Sayfu l-Lahi l-Maslul , was one of the most successful military commanders of all time. He is noted for his military prowess, commanding the forces of Muhammad and those of his immediate successors of the Rashidun Caliphate; Abu Bakr and Umar ibn al-Khattab....
, was able to conquer most of Mesopotamia
Mesopotamia

Mesopotamia is the area of the Tigris-Euphrates river system, along the Tigris and Euphrates rivers, largely corresponding to modern Iraq, as well as some parts of northeastern Syria, some parts of southeastern Turkey, and some parts of the Khuzestan Province of southwestern Iran....
 (Iraq
Iraq

Iraq , officially the Republic of Iraq , is a country in Western Asia spanning most of the northwestern end of the Zagros Mountains, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....
) from the Persians in a span of nine months, from April 633 until January 634, after a series of battles. The following are some of the most significant battles fought between the Muslim Arabs and the Persians in Mesopotamia.

Battle of Walaja

The Battle of Walaja was a battle fought in Mesopotamia (Iraq
Iraq

Iraq , officially the Republic of Iraq , is a country in Western Asia spanning most of the northwestern end of the Zagros Mountains, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....
) in May 633 between the Muslim Arabs
Muslim conquests

Arab Muslim conquests , also referred to as the Islamic conquests or Arab conquests, began after the death of the Islamic prophet Muhammad....
 under Khalid ibn al-Walid
Khalid ibn al-Walid

Khalid ibn al-Walid also known as Sayfu l-Lahi l-Maslul , was one of the most successful military commanders of all time. He is noted for his military prowess, commanding the forces of Muhammad and those of his immediate successors of the Rashidun Caliphate; Abu Bakr and Umar ibn al-Khattab....
 against the Persian Empire
Sassanid Empire

The Sassanid Empire or Sassanian Dynasty is the name of the last pre-Islamic Iranian empire. It was one of the two main powers in Western Asia for a period of more than 400 years....
 and its Arab
Arab

An Arab is a person who Identity as such on linguistic or cultural grounds. The plural form, Arabs , refers to the Ethnocultural group at large....
 allies. The strength of the Persian army at the battle was approximately 40,000 compared to 15,000 for the Arabs.

Khalid decisively defeated the Persian forces using a variation of the double envelopment
Pincer movement

The pincer movement or double envelopment is a basic element of military strategy which has been used, to some extent, in many wars, and is considered to be the consummate Maneuver, executed by Hannibal at the Battle of Cannae in 216 BC, over 2,200 years ago....
 tactical maneuver, similar to the maneuver Hannibal used to defeat the Roman
Roman Republic

The Roman Republic was the phase of the Ancient Rome characterized by a republican form of government; a period which began with the overthrow of the Roman Roman Kingdom, c....
 forces at the Battle of Cannae
Battle of Cannae

The Battle of Cannae was a major battle of the Second Punic War, taking place on August 2, 216 BC near the town of Cannae in Apulia in southeast Italy....
.

Battle of Firaz

Khalid defeated the combined forces of the Persian Empire, Byzantine Empire
Byzantine Empire

Byzantine Empire and Eastern Roman Empire are conventional names used to describe the Roman Empire during the Middle Ages, centered on its capital of Constantinople....
 and Christian Arabs at the Battle of Firaz
Battle of Firaz

The Battle of Firaz was the last battle of the Muslim Arab commander Khalid ibn al-Walid in Mesopotamia against the combined forces of the Byzantine Empire, Sassanid Empire, and Arab Christians....
. The result of the battle was a decisive victory for Khalid, which led to most of Mesopotamia being annexed by the Muslims.

After this victory, Khalid left Mesopotamia to lead another campaign at Syria
Muslim conquest of Syria

The Muslim conquest of Syria occurred in the first half of the 7th century, and refers to the region known as the Bilad al-Sham, the Levant, or Greater Syria....
 against the Roman Empire, after which Mithna ibn Haris took command in Mesopotamia.

Battle of the Bridge

The Sassanids mounted a counterattack under Bahman Jadu, who led 10,000 Persians against 9,000 Arabs. The Persians won a major victory at the Battle of the Bridge
Battle of the Bridge

The Battle of the Bridge was fought in 634 between Arab Muslims led by Abu Ubaid and the Sassanid Empire forces led by Bahman. The Sassanids were victorious....
 against the Muslims in October 634, in which Abu Ubaid Al-Thaqafi was killed in battle. The Persians lost 600 men, and the Arabs more than 4,000.

After a decisive Muslim victory against the Byzantines in Syria
Levant

The Levant describes, traditionally, the Eastern Mediterranean at large, but can be used as a geographical term that denotes a large area in Western Asia formed by the lands bordering the Eastern shores of the Mediterranean, roughly bounded on the north by the Taurus Mountains, on the south by the Arabian Desert, and on the west by the M...
 at the Battle of Yarmuk in 636, the second caliph, Umar
Umar

Umar , also known as Umar the Great or Omar the Great was a Muslim from the Banu Adi clan of the Quraysh Tribes of Arabia, and a sahaba of Muhammad....
, was able to transfer forces to the east and resume the offensive against the Sassanids.

The Battle of al-Qadisiyyah

This was the decisive engagement that sealed the fate of the Sassanid empire. Around the year 636, Rostam Farrokhzad
Rostam Farrokhzad

Rostam Farrokhzad was the Spahbod of the Sassanid Empire under the reign of Yazdegerd III, r. 632 - 651. Rostam is remembered as an historical figure, a character in the Persian epic poem Shahnama, and as a touchstone of some Iranian peoples nationalists....
, advisor and general for Yazdegerd III (r. 632–51) led an army of about 100,000 men across the Euphrates River to al-Qadisiyyah
Battle of al-Qadisiyyah

The Battle of al-Qadisiyyah was the decisive engagement between the Rashidun Caliphate and the Sassanid Empire during the first period of Islamic expansion around 636 CE, which resulted in the Islamic conquest of Persia....
, near the present-day city of Hilla in Iraq
Iraq

Iraq , officially the Republic of Iraq , is a country in Western Asia spanning most of the northwestern end of the Zagros Mountains, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....
. Some have criticised him for this decision to face the Arabs on their own ground — on the fringes of the desert — and surmised that the Persians could have held their own if they had stayed on the opposite bank of the Euphrates.

The Caliph
Caliph

The Caliph is the head of state in a Caliphate, and the title for the leader of the Islamic Ummah, an Islamic community ruled by the Shari'ah....
 Umar
Umar

Umar , also known as Umar the Great or Omar the Great was a Muslim from the Banu Adi clan of the Quraysh Tribes of Arabia, and a sahaba of Muhammad....
 dispatched 30,000 men under the command of Sa`d ibn Abi Waqqas against the Persian army. The Battle of al-Qadisiyyah
Battle of al-Qadisiyyah

The Battle of al-Qadisiyyah was the decisive engagement between the Rashidun Caliphate and the Sassanid Empire during the first period of Islamic expansion around 636 CE, which resulted in the Islamic conquest of Persia....
 followed, with the Persians prevailing at first, but on the third day of fighting, the Muslims gained the upper hand. The Persian general Rostam Farrokhzad
Rostam Farrokhzad

Rostam Farrokhzad was the Spahbod of the Sassanid Empire under the reign of Yazdegerd III, r. 632 - 651. Rostam is remembered as an historical figure, a character in the Persian epic poem Shahnama, and as a touchstone of some Iranian peoples nationalists....
 was badly wounded, caught and beheaded. According to the Arab Muslim sources - the only ones known existing -, the Arab losses were 20,000, and the Persians lost 8,500 men and one of the people who did good in the battle is Abo Mihjin al-Thaqafi.

Following the Battle, the Arab Muslim armies pushed forward toward the Persian capital of Ctesiphon
Ctesiphon

Ctesiphon was one of the great cities of the Persian Empire, located on the east bank of the Tigris.Ctesiphon was an imperial capital of the Arsacids and of their successors, the Sassanids....
 (also called Al-Mada'in
Al-Mada'in

Al-Mada'in is the name of an ancient urban complex along the Tigris, in present-day Iraq, that was the site of the cities of Seleucia and Ctesiphon, and was also referred to as Seleucia-Ctesiphon....
 in Arabic), which was quickly evacuated by Yazdgird after a brief siege. After seizing the city, they continued their drive eastwards, following Yazdgird and his remaining troops. Within a short space of time, the Arab armies defeated a major Sasanian counter-attack in the Battle of Jalula', as well as other engagements at Qasr-e Shirin, and Masabadhan. By the mid-7th Century, the Arabs controlled all of Mesopotamia, including the area that is now the Iranian province of Khuzestan.

Conquest of the Iranian Plateau

It is said that the caliph Umar did not wish to send his troops through the Zagros mountains
Zagros Mountains

The Zagros , are the largest mountain range in Iran and Iraq. They have a total length of 1 500 km from western Iran, on the border with Iraq to the southern parts of the Persian Gulf....
 and onto the Iranian plateau. One tradition has it that he wished for a "wall of fire" to keep the Arabs and Persians apart. Later commentators explain this as a common-sense precaution against over-extension of his forces. The Arabs had only recently conquered large territories that still had to be garrisoned and administered.

Battle of Nahawand

Califate 750
Umar's generals and warriors pushed for further action. They argued that Yazdegerd III could again become a threat if he were left undisturbed while raising more troops. The continued existence of the Persian government was an incitement to revolt in the conquered territories. Finally, those Arabs who felt slighted in the distribution of land and booty from the Mesopotamian conquests pushed for further raids.

Umar relented. Arab raiding parties passed over the Zagros mountains separating Mesopotamia and the Iranian plateau.

Yazdegerd, the Sassanid king, made yet another effort to regroup and defeat the invaders. By 641 he had raised a new force, which took a stand at Nihavand
Nahavand

Nahavand is a town in Hamadan Province in Iran. It is located south of Hamadan, east of Malayer and southwest of Borujerd. Nahavand is one of the oldest existing cities in Iran....
, some forty miles south of Hamadan in modern Iran. Al-Nu'man ibn Muqarrin al-Muzani and his cavalry attacked and again defeated the Persian forces. Muslims recognized it as the Victory of victories (Fatih alfotuh).

End of the Sassanids

Yazdegerd was unable to raise another army and became a hunted fugitive. He fled from one district to another until a local miller killed him for his purse at Merv
Merv

Merv , formerly Achaemenid Satrapy of Margiana, and later Alexandria and Antiochia in Margiana , was a major oasis-city in Central Asia, on the historical Silk Road, located near today's Mary, Turkmenistan in Turkmenistan....
 in 651. The Islamic forces established a garrison town at Merv. By 656, they had already conquered Greater Khorasan
Greater Khorasan

Greater Khorasan is a modern term for a geographic region spanning north-eastern Iran, Turkmenistan, Uzbekistan, Tajikistan and north-western Afghanistan....
 (which included the cities Merv and Balkh
Balkh

Balkh , also known as Bactra, was once a major world city but was destroyed entirely by the Mongols. Today it is a small town in the Balkh Province, northern Afghanistan, about 20 kilometers northwest of the provincial capital, Mazar-e Sharif, and some 74 km south of the Amu Darya, the Oxus River of antiquity, of which a tributary form...
, with the center or capital being the city of Herat
Herat

Herat , classically called the Aria, is a city in western Afghanistan, in the province also known as Herat province. It is situated in the valley of the Hari River, Afghanistan, which flows from the mountains of central Afghanistan to the Karakum Desert in Turkmenistan....
). For many decades to come, this was the easternmost limit of complete Muslim rule.

Aftermath

Under Umar and his immediate successors, the Arab conquerors attempted to maintain their political and cultural cohesion despite the attractions of the civilizations they had conquered. The Arabs were to settle in the garrison towns rather than on scattered estates. They were not to marry non-Arabs, or learn their language, or read their literature. The new non-Muslim subjects, or dhimmi
Dhimmi

A dhimmi is a non-Muslim subject of a state governed in accordance with sharia. The term connotes an obligation of the state to protect the individual, including the individual's life, property, and freedom of religion and worship, and required loyalty to the empire, and a poll tax known as the jizya....
, were to pay a special tax, the jizya
Jizya

Under Sharia, jizya or jizyah is a per capita tax levied on a section of an Islamic state's non-Muslim citizens, who meet certain criteria....
 or poll tax, which was calculated per individual at varying rates for able bodied men of military age. In addition, the protected People-of-the-Book were subject to various restrictions of occupation, worship, and dress

Mass conversions were neither desired nor allowed, at least in the first few centuries of Arab rule. Later such restrictions disappeared. The Islamic prophet Muhammad had made it clear that the "People of the Book
People of the Book

In Islam, the People of the Book are non-Muslim peoples who, according to the Qur'an, received scriptures which were revelation to them by God before the time of Muhammad, most notably Christians and Jews....
", Jews and Christians, were to be tolerated so long as they submitted to Muslim rule. It was at first unclear as to whether or not the Sassanid state religion, Zoroastrianism
Zoroastrianism

Zoroastrianism is the religion and philosophy based on the teachings ascribed to the prophet Zoroaster, after whom the religion is named. The term Zoroastrianism is in general usage, essentially synonymous with Mazdaism, i.e., the worship of Ahura Mazda, exalted by Zoroaster as the supreme divine authority....
, was entitled to the same tolerance and some Arab commanders destroyed Zoroastrian shrines and prohibited Zoroastrian worship while others were more accepting.

Before the conquest, the Persians had been mainly Zoroastrian; there were also large and thriving Christian
Christian

A Christian is a person who adheres to Christianity, a Monotheism#Christian view religion centered on the life and teachings of Jesus and interpreted by Christians to have been prophesied in the Hebrew Bible/Old Testament....
 and Jewish communities, along with smaller numbers of Buddhists and other groups. However, there was a slow but steady movement of the population toward Islam
Islam

Islam is a Monotheism, Abrahamic religion originating with the teachings of the Prophets of Islam Muhammad, a 7th century Arab religious and political figure....
. The nobility and city-dwellers were the first to convert, Islam spread more slowly among the peasantry and the dihqans, or landed gentry. By the late 10th century, the majority of Persians had become Muslim, at least nominally. Most Persian Muslims were Sunni Muslims
Sunni Islam

Sunni Islam is the Demographics of Islam Divisions of Islam of Islam. Sunni Islam is also referred to as Ahl as-Sunnah wa?l-Jama?ah or Ahl as-Sunnah for short....
. Though Iran is known today as a stronghold of the Shi'a Muslim faith, it did not become so until much later around the 15th century. The Iranian Muslims projected many of their own Persian moral and ethical values that predates Islam into the religion, while recognizing Islam as their religion and the prophet's son in law, Ali
Ali

Ali ibn Abi alib was the cousin and son-in-law of the Prophets of Islam Muhammad, who ruled over the Rashidun empire from 656 to 661. Sunni Muslims consider Ali as the fourth and final Rashidun while Shia Islam Muslims regard Ali as the first Imamah and consider him and his descendants as the Succession to Muhammad, all of which are me...
 as an enduring symbol of justice.

According to Bernard Lewis
Bernard Lewis

Bernard Lewis is a British-American historian, Orientalist, and pundit . He is the Cleveland E. Dodge Emeritus of Near Eastern Studies at Princeton University....
:
"[Arab Muslims conquests] have been variously seen in Iran: by some as a blessing, the advent of the true faith, the end of the age of ignorance and heathenism; by others as a humiliating national defeat, the conquest and subjugation of the country by foreign invaders. Both perceptions are of course valid, depending on one's angle of vision… Iran was indeed Islamized, but it was not Arabized. Persians remained Persians. And after an interval of silence, Iran reemerged as a separate, different and distinctive element within Islam, eventually adding a new element even to Islam itself. Culturally, politically, and most remarkable of all even religiously, the Iranian contribution to this new Islamic civilization is of immense importance. The work of Iranians can be seen in every field of cultural endeavor, including Arabic poetry, to which poets of Iranian origin composing their poems in Arabic made a very significant contribution. In a sense, Iranian Islam is a second advent of Islam itself, a new Islam sometimes referred to as Islam-i Ajam. It was this Persian Islam, rather than the original Arab Islam, that was brought to new areas and new peoples: to the Turks, first in Central Asia and then in the Middle East in the country which came to be called Turkey, and of course to India. The Ottoman Turks brought a form of Iranian civilization to the walls of Vienna…"


According to Tarikh-i Bukhara "The residents of Bukhara became Muslims. But they renounced [Islam] each time the Arabs turned back. Qutayba b. Muslim made them Muslim three times, [but] they renounced [Islam] again and became nonbelievers. The fourth time, Qutayba waged war, seized the city, and established Islam after considerable strife….They espoused Islam overtly but practiced idolatry in secret."

During the reign of the Ummayad dynasty, the Arab conquerors imposed Arabic as the primary language of the subject peoples throughout their empire, displacing their indigenous languages. However, Middle Persian
Middle Persian

Middle Persian is the Iranian languages language/ethnolect of Southwestern Iran that during Sassanid times became a prestige dialect and so came to be spoken in other regions as well....
 proved to be much more enduring. Most of the structure and vocabulary survived, evolving into the modern Persian language
Persian language

name=Persian|nativename=|pronunciation=[f??r'si]|image=|caption=Farsi in Perso-Arabic script |states= Iran, Afghanistan, Tajikistan, Uzbekistan, and Bahrain....
. However, Persian did incorporate a certain amount of Arabic vocabulary, especially as pertains to religion, as well as switching from the Pahlavi Aramaic alphabet
Aramaic alphabet

The Aramaic alphabet has been called an abjad--that is, a consonantal alphabet -- used for writing Aramaic language. It is adapted from the Phoenician alphabet, and became distinctive from it by the eighth century BCE....
 to a modified version of the Arabic alphabet
Arabic alphabet

The Arabic alphabet is the writing system used for writing several languages of Asia and Africa, such as Arabic language, Persian language, and Urdu language....
.

See also

  • Islamicization in post-conquest Iran
    Islamicization in post-conquest Iran

    Islamization in post-Islamic Iran, a long process by which Islam was gradually accepted by the majority population, occurred as a result of the Islamic conquest of Persia....
  • History of Arabs in Afghanistan
    History of Arabs in Afghanistan

    The History of Arabs in Afghanistan span several centuries from ethnic Ghazi warriors who battled or migrated to the area now known as Afghanistan during conflicts dating back from the 7th century till the recent Soviet war in Afghanistan when they assisted fellow Muslims in fighting the Soviets and pro-Soviet Afghans....
  • History of Iran
    History of Iran

    History of Iran and Greater Iran consists of the area from the Euphrates in the west to the Indus River and Syr Darya in the east and from the Caucasus, Caspian Sea, and Aral Sea in the north to the Persian Gulf and the Gulf of Oman in the south....
  • Military history of Iran
    Military history of Iran

    With thousands of years of recorded History of Iran, and due to an unchanging geographic condition , Iran has had a long, varied, and checkered Military of Iran culture and history, ranging from triumphant and unchallenged ancient military supremacy affording effective superpower status in its day, to a series of near catastrophic defeats at the...
  • Fall of Sassanid dynasty
  • Muslim conquests
    Muslim conquests

    Arab Muslim conquests , also referred to as the Islamic conquests or Arab conquests, began after the death of the Islamic prophet Muhammad....
  • Spread of Islam
    Spread of Islam

    The Spread of Islam began shortly after the death of the Prophets of Islam Muhammad in 632. Trade networks connected many regions which helped the spread of Islam....


Literature

  • Bashear, Suliman — Arabs and Others in Early Islam, Darwin Press, 1997
  • Daniel, Elton — The History of Iran, Greenwood Press, 2001
  • Donner, Fred — The Early Islamic Conquests, Princeton, 1981
  • M. Ismail Marcinkowski, Persian Historiography and Geography: Bertold Spuler on Major Works Produced in Iran
    Iran

    Iran , officially the Islamic Republic of Iran and formerly known internationally as Persian Empire until 1935, is a country in Central Eurasia, located on the northeastern shore of the Persian Gulf and the southern shore of the Caspian Sea....
    , the Caucasus
    Caucasus

    The Caucasus or Caucas is a geopolitical region located between Europe, Asia, and the Middle East. It is home to Europe's highest mountain ....
    , Central Asia
    Central Asia

    Central Asia is a region of Asia from the Caspian Sea in the west to central China in the east, and from southern Russia in the north to northern India in the south....
    , India
    India

    India, officially the Republic of India , is a country in South Asia. It is the List of countries and outlying territories by total area country by geographical area, the List of countries by population country, and the most populous liberal democracy in the world....
     and Early Ottoman Turkey, with a foreword by Professor Clifford Edmund Bosworth
    , member of the British Academy
    British Academy

    The British Academy is the United Kingdom's national academy for the humanities and the social sciences. It was established by Royal Charter in 1902, and is a fellowship of more than 800 scholars....
    , Singapore: Pustaka Nasional, 2003, ISBN 9971-77-488-7.
  • Sicker, Martin — The Islamic World in Ascendancy: From the Arab Conquests to the Siege of Vienna, Praeger, 2000
  • Zarrin’kub, Abd al-Husayn
    Abdolhossein Zarinkoob

    Abdolhossein Zarinkoob was a prominent scholar of Iranian literature, history of literature, Persian culture and history.He was born on March 19, 1923 in Borujerd, Iran, received his PhD from Tehran University in 1955 under the supervision of Badiozzaman Forouzanfar, and held faculty positions at prestigious universities such as Oxford Uni...
     — Ruzgaran : tarikh-i Iran az aghz ta saqut saltnat Pahlvi, Sukhan, 1999. ISBN 964-6961-11-8
  • , pp. 203–10, Encyclopaedia Iranica.