Muhaqqiq Al-Hilli

Najm ul-Din Abul-Qasim Ja'far bin al-Hasan bin Yahya bin al-Hasan bin Sa'id, famous as al-Muhaqqiq al-Hilli and al-Muhaqqiq al-Awwal was an influential Shi'i Mujtahid born in the city of al-Hilla, Iraq. He played an important role in shaping Twelver Shi'ism's legal doctrines works.