أبو القاسم الخوئي
In 1936 he moved to Iraq and has studied in seminaries of Karbala and then Najaf under Grand Ayatollah Mohammad Hadi Milani, ِAbd al-Hadi al-Shirazi, Hossein Heli, Mohammad Kazem Shirazi and especially Abu al-Qasim al-Khoei. He obtained his Ijtihad in 1965 in Najaf.