أبو القاسم الخوئي
He has studied in the Qom Seminary under Sayyid Hossein Borujerdi and Mohaqeq Damad, as well as in the Najaf Seminary under Sayyid Abu al-Qasim al-Khoei, Sayyid Muhsin al-Hakim, and Sayyid Abd al-Hadi Shirazi.