This is the first comprehensive study of the life and works of Muhammad Baqer as-Sadr - an Iraqi scholar who made an important contribution to the renewal of Islamic law and politics in the contemporary Middle East. Executed in 1980, Sadr was the most articulate thinker and a major political actor in the revival of Shi‘i learning, which placed Najaf in Southern Iraq at its centre. Dr Chibli Mallat examines the intellectual development of Sadr and his companions who included Ruhullah al-Khumaini and assesses Sadr’s innovative approaches to the study of law, economics and banking. The author convincingly demonstrates how Sadr’s ideas and activities were influential in the rise of political Islam across the Middle East and played an important part in the Iranian revolution of 1979.