Also found in: Acronyms.
Hasan(häsän`), c.625–c.669; son of AliAli
(Ali ibn Abu Talib), 598?–661, 4th caliph (656–61). The debate over his right to the caliphate caused a major split in Islam into Sunni and Shiite branches, and he is regarded by the Shiites as the first Imam, or leader: Shiite derives from the phrase
..... Click the link for more information. and FatimaFatima
, 616?–633?, daughter of Muhammad by his first wife, Khadija. Fatima was the wife of Ali, the mother of Hasan and Husein, and reputedly the ancestress of the Fatimids. She is revered by all branches of the Islamic faith and is the subject of many mysteries and legends.
..... Click the link for more information. (daughter of Muhammad the Prophet). When Ali was killed in 661, Hasan became caliph, but he was not strong enough to withstand the threat of arms of the Umayyads and under pressure abdicated in favor of MuawiyaMuawiya
, d. 680, 1st Umayyad caliph (661–80), one of the greatest Muslim statesmen; son of Abu Sufyan, a Koreish tribesman of Mecca. He submitted to Islam the year of the surrender of Mecca and became Muhammad's secretary.
..... Click the link for more information. . He retired to Medina and died, reputedly of poison. His more active brother, HuseinHusein
, c.626–680, Muslim leader, second son of Ali and Fatima (daughter of Muhammad). With the assassination of his father in 661 and the acquiescence of his brother Hasan, the caliphate passed out of the Alid family, although many continued to
..... Click the link for more information. , took up the family cause. The Shiites believe that Hasan was murdered by the Umayyads and venerate him as a martyr.