Al-Khoei (RA) was born in Azerbaijan, Iran on 15 Rajab 1317 H. / 1899 A. D. and passed away in Najaf Al-Ashraf, Iraq on eight Safar 1412 A.H.(August 8, 1992 A. D.). He was educated in the established  raditional way of Shia Theology by well-known jurists. He joined the world renowned theological institution in the holy city of Najaf Al- Ashraf in 1912.

At his early age, he qualified for the degree of  ijtihad. Teaching Juristic and Writing Merits He taught in Najaf for over 70 years. For about 50 years, he specialized in supervising Graduation Classes (Bahth-ul-Kharij) that is equivalent to a Doctoral thesis.

He is considered as the architect of a distinct school of thought in the principles of Jurisprudence and Islamic Law, and also, one of the leading exponents of scholastic theology (KALAM) and ‘Rijal’ (study of the biographies of transmitters of the Prophetic traditions (Ahadith), Jurisprudence (Fiqh) and exegesis of the Holy Qur’an (Tafseer).

His interests included Astronomy, Maths, and Philosophy. He wrote 37 books and treatises, most of which have been published.

Grand Ayatollah Sayyid Abul Qasim Musawi Al-Khoei Achievements in the Welfare Sphere His years of dedicatto establishing welfare, social, cultural, and educational institutions for Muslims worldwide.