Muhammad al-Mahdi
Overview
 
Muḥammad ibn al-Ḥasan al-Mahdī (born c. July 29, 869; 15 Sha‘bān
Sha'aban
Sha'aban is the eighth month of the Islamic calendar.This is the month of ‘separation’, so called because the pagan Arabs used to disperse in search of water...

 255 AH
Islamic calendar
The Hijri calendar , also known as the Muslim calendar or Islamic calendar , is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days. It is used to date events in many Muslim countries , and used by Muslims everywhere to determine the proper day on which to celebrate Islamic...

) is believed by Twelver Shī‘a Muslims to be the Mahdī
Mahdi
In Islamic eschatology, the Mahdi is the prophesied redeemer of Islam who will stay on Earth for seven, nine or nineteen years- before the Day of Judgment and, alongside Jesus, will rid the world of wrongdoing, injustice and tyranny.In Shia Islam, the belief in the Mahdi is a "central religious...

, an ultimate savior of humankind and the final Imām of the Twelve Imams. Twelver Shī‘a believe that al-Mahdī was born in 869 and did not die but rather was hidden by God (this is referred to as the Occultation
The Occultation
The Occultation in Shia Islam refers to a belief that the messianic figure, or Mahdi, who in Shi'i thought is an infallible male descendant of the founder of Islam, Muhammad, was born but disappeared, and will one day return and fill the world with justice. Some Shi'is, such as the Zaidi and...

) and will later emerge with Isa (Jesus Christ) in order to fulfill their mission of bringing peace and justice to the world.
 
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