Mohammed Sadeq Mohammed Mahdi al-Sadr (12 July 1906 – 7 December 1986) was an Iraqi Twelver Shīʿī jurist and Marjaʿ based in Najaf al-Ashraf. He was the father of Grand Ayatollah Mohammed al-Sadr. Renowned for his moderate fatwas, advocacy for the poor and laborers, and support of popular uprisings, he played a major role in rebuilding the Najaf seminary and educating a generation of scholars and preachers.
Early life and background.
Mohammed Sadeq al-Sadr was born on 12 July 1906 in the al-Kāẓimīyah district of Baghdad into a scholarly family tracing its lineage to Imām Mūsā al-Kāẓim. He received his elementary religious education at local kuttabs before moving to Najaf to pursue advanced studies in the hawza under leading jurists of the time.
Lineage.
His family belongs to the prominent Ṣadr lineage. His full nasab (genealogy) is often recorded as:
Education and scholarly ranks.
In the early 1930s, he entered the Najaf Hawza, studying under Grand Ayatollahs Mohammed Husayn Nāʾīnī and Mohammed Rida al-Yassīn. By the 1940s he had attained the rank of mujtahid, authorizing him to issue independent juristic rulings.
Scholarly and religious activities.
He established advanced research circles (ḥalaqāt khārij) in Fiqh and Uṣūl at both the Great Mosque of Kufa and in Najaf. Over decades he taught thousands of students, often addressing real-world issues such as workers’ rights, welfare of the poor, and public interest (masāʾil mursalah).
Political positions.
While generally avoiding partisan politics, he used his limited connections with religious elites to call for social and economic reforms. He voiced support for several popular uprisings against injustice, earning him a reputation as an advocate for the marginalized.
Family and children.
He married a daughter of Grand Ayatollah Mohammed Rida al-Yassīn. The couple had one son, Mohammed al-Sadr (b. 1943), who succeeded him as a leading Marjaʿ in Najaf.
Death and burial.
Mohammed Sadeq al-Sadr died on 7 December 1983 in Najaf after a period of illness. His funeral prayer was held in the Ḥaydariyyah courtyard, and he was interred in the al-ʿAtabah al-ʿAlawīyah cemetery in Najaf.
Legacy and influence.
He left behind a substantial body of juristic opinions and religious instruction, and his son ohcmmed aontinued his father’s mission, later founding what became known as the Sadrist Movement, a major religious and social force in post-2003 Iraq.