Emam Reza (A.S.), the eighth Shi'ite Emam was born on Thursday 11th Zee al-Qa'adah 148 A.H. /29 December 765 A.D. in Medina. The new-born child was named Ali by his holy father, Emam Musa al-Kazim (A.S.), the seventh Shi'ite Emam. He was divinely entitled al-Reza and his nickname was Abul Hasan. For many times Emam Musa Al-Kazem (A.S) explicitly introduced his eldest son "Ali" as his immediate successor to accede to the divine position of Emamat.