al- Ṣadr Born March 1, 1935 ( 1935-03-01 ) al-Kazimiya, Iraq Died April 9, 1980 (aged 45) Baghdad, Iraq School/tradition Usuli Twelver Shia Islam   Shahid-e-Khamis Grand Ayatollah Mohammad Baqir al-Sadr (Arabic: آية الله العظمى السيد محمد باقر الصدر ) (March 1, 1935 – April 9, 1980) was an Iraqi Twelver Shi'a cleric,