Muhammad ibn Harun al-Rashid, better known by his regnal name of al-Amin (April 787 – 24/25 September 813) (Arabic: محمد الأمين بن هارون الرشيد‎), was the sixth Abbasid Caliph. He succeeded his father, Harun al-Rashid in 809 and ruled until he was deposed and killed in 813, during the civil war with his brother, al-Ma'mun.