Abu al-Qasim al-Khoei
Shirazi began his religious education at a young age in Najaf, studying under his grandfather Sheikh Muhammad-Kadhim al-Shirazi, Sayyid Abu al-Qasim al-Khoei, Sheikh Husayn al-Hilli and Sheikh Baqir al-Zanjani. He then immigrated to Iran, and studied under Abul Hasan Sharani, Muhammad Taqi Amoli, Fazel Tooni, Mirza Ahmad Ashtiani, Shekh Mojtaba Lankarani, Sayyid Abu al-Hasan Rafiee, and Mirza Mehdi Elahi Qomshehee.