Muhammad Baqir al-Sadr
Muhammad Baqir al-Sadr (Arabic: محمد باقر الصدر, romanized: Muḥammad Bāqir aṣ-Ṣadr; March 1, 1935 – April 9, 1980), also known as al-Shahid al-Khamis (Arabic: الشهيد الخامس, romanized: al-Shahīd al-Khāmis, lit. 'the fifth martyr'), was an Iraqi Islamic scholar, philosopher, and the ideological founder of the Islamic Dawa Party. He was the father-in-law to Muqtada al-Sadr, a cousin of Muhammad Sadiq al-Sadr and Musa al-Sadr.