أبو القاسم الخوئي
He grew up in Karbala, and studied in its seminary under his father, his older brother, Muhammad al-Shirazi and senior scholars like Sheikh Muhammad al-Hajiri and Sheikh Yusuf al-Khorasani. He moved to Najaf to complete his advanced studies, and studied under Sayyid Abu al-Qasim al-Khoei, as well as the founder of the Islamic republic of Iran, Sayyid Ruhollah Khomeini.