‍ '​Alī ibn Mūsā al-Rezā (Arabic: علي بن موسى الرضا‎) also called abu al-Hasan is commonly known as Ali al-Reza (c. 29 December 765 – 23 August 818) also commonly known in Persia as Imam Reza (Persian: امام رضا), was a descendant of Prophet Muhammad and the eighth Shia Imam after his father Musa al-Kadhim and before his son Muhammad al-Jawad; and was an Imam of knowledge according to the Zaydi (Fiver) Shia school and Sufis.