Husayn ibn Ali
Abū ʿAbd Allāh al-Ḥusayn ibn ʿAlī ibn Abī Ṭālib (; 10 January 626 – 10 October 680) was a grandson of the Islamic prophet Muhammad and a son of Ali ibn Abi Talib and Muhammad's daughter Fatima, as well as a younger brother of Hasan ibn Ali. He is the third Imam of Shia Islam after his brother, Hasan, and before his son, Ali ibn Husayn Zayn al-Abidin. Being a grandson of the prophet, he is a member of the Ahl al-Bayt. He is also considered to be a member of the Ahl al-Kisa, and a participant in the event of Mubahala. Muhammad described him and his brother, Hasan, as "the leaders of the youth of Paradise." During the caliphate of Ali, Husayn accompanied him in wars. After the assassination of Ali, he obeyed his brother in recognizing the Hasan–Muawiya treaty, despite it being suggested to do otherwise. In the nine-year period between Hasan's abdication in AH 41 (660 CE) and his death in AH 49 (669 CE), Hasan and Husayn retreated to Medina, trying to keep aloof from political involvement for or against Mu'awiya. After the death of Hasan, when Iraqis turned to Husayn, concerning an uprising, Husayn instructed