His name is al-Hasan, Abu Muhammad. Being a resident of ‘Asgar a suburb of Samarra’, he is titled al-Askari. His father was Imam ‘Ali An-Naqi (A.S.) and his mother was Salil Khatun, an ideal woman in piety, worship, chastity and generosity. He was born in Medina on the tenth of Rabi’ al-Akhir, 232 A.H. (December 4, 846 AD).