Hasan ibn Ali
an important figure in Islam.
He is the son of Ali and Fatimah. The latter is the daughter of the Islamic prophet Muhammad. After his father's death, he briefly succeeded him as the Caliph , before retiring to Madinah and entering into an agreement with the first Umayyad ruler, Muawiyah ibn Abi Sufyan, who assumed the Caliphate. Hasan is one of the five people of the Ahl al-Kisa, as well as a member of the Ahl al-Bayt. Hasan ibn Ali is 2nd Imam of Shia Islam. Hasan is also highly respected by the Sunni as the grandson of Muhammad