ʾAbū Manṣūr Jamāl al-Dīn al-Ḥasan b. Yūsuf b. Muṭahhar al-Ḥillī (Arabic: ابومنصور جمال الدین الحسن ابن یوسف ابن مطهّر الحلّي) (b. 648/1250 - d. 726/1325), known as al-Allama al-Hillī (Arabic: العلامة الحلي), was a Shi'a scholar of the eighth/fourteenth century. His debates and writings caused Oljeitu (Sultan Muhammad Khudabanda) to convert to Shi'a Islam, which in turn led to the spread of Shi'a beliefs in Iran. Al-Allama al-Hilli has many works on jurisprudence, principles of jurisprudence, theology, philosophy, logics, supplications and other fields of Islamic studies. Because of his vast knowledge, he was the first person entitled Ayatollah.
|Full Name||Abu Mansur Jamal al-Din al-Hasan b. Yusuf b. Mutahhar al-Hilli|
|Well-Known Relatives||Muhammad b. al-Hasan al-Hilli|
|Death||Muharram 21, 726/December 28, 1325|
|Professors||Al-Muhaqqiq al-Hilli, al-Sayyid b. Tawus, al-Sayyid Ahmad b. Tawus, Nasir al-Din al-Tusi|