Ajārūmīya is a 13th-century book of Arabic grammar

Arabic grammar

Arabic grammar is the grammar of the Arabic language. Arabic is a Semitic language and its grammar has many similarities with the grammar of other Semitic languages....

 (نحو عربي‎ naḥw ʿarabī). Written in verse for easy memorization, it formed the foundation of a beginner's education in Classical

Classical Arabic

Classical Arabic , also known as Qur'anic or Koranic Arabic, is the form of the Arabic language used in literary texts from Umayyad and Abbasid times . It is based on the Medieval dialects of Arab tribes...

 Arabic

Arabic language

Arabic is a name applied to the descendants of the Classical Arabic language of the 6th century AD, used most prominently in the Quran, the Islamic Holy Book...

 learning in Arab societies of the time and was one of the first books to be memorized after the Qur'an

Qur'an

The Quran , also transliterated Qur'an, Koran, Alcoran, Qur’ān, Coran, Kuran, and al-Qur’ān, is the central religious text of Islam, which Muslims consider the verbatim word of God . It is regarded widely as the finest piece of literature in the Arabic language...

. It was written by Abu 'Abd Allah Sidi Muhammad ibn Da'ud as-Sanhaji (aka "Ibn Ajarrum") (d. 1324).