Al-Hussein (Al-Ḥusayn ibn) and his followers are killed at Karbala by the army of Yazid, the Umayyad caliph, on their wa

Husayn ibn Ali was an Alid political and religious leader. The second son of Ali and Fatima and a grandson of the Islamic prophet Muhammad, as well as a younger brother of Hasan ibn Ali, Husayn is regarded as the third Imam in Shia Islam after his brother, Hasan, and before his son, Ali al-Sajjad. Husayn is a prominent member of the Ahl al-Bayt and is also considered to be a member of the Ahl al-Kisa and a participant in the event of the 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 the military campaigns of the First Fitna. After the assassination of Ali, he obeyed his brother in recognizing the Hasan–Mu'awiya treaty, despite being suggested to do otherwise.