JamÃÂl al-Dën Abà « al-ḤajjÃÂj Yà «suf ibn al-Zakë ûAbd al-RaḥmÃÂn ibn Yà «suf ibn ûAbd al-Malik ibn Yà «suf al-Kalbë al-Quá¸ÂÃÂ'ë al-Mizzë, (), also called Al-ḤÃÂfiẠAbë al-ḤajjÃÂj, was a Syrian muhaddith and the foremost `Ilm al-rijÃÂl Islamic scholar.
Al-Mizzë was born near Aleppo in 1256 under the reign of the last Ayyubid emir An-Nasir Yusuf. From 1260, the region was ruled by the na'ib al-saltana (viceroys) of the Mamluk Sultanate. In childhood, he moved with his family to the village of al-Mizza outside Damascus, where he was educated in Qur'ÃÂn and fiqh. In his twenties he began his studies to become a muḥaddith and learned from the masters. His fellow pupil and life-long friend was Taqë al-Dën ibn Taymiyya. It was also Taymiyya's ideological influence, which, although contrary to his own ShÃÂfi'ë legalist inclination, that led to a stint in jail.
Despite his affiliation with Ibn Taymiyya, he became head of the DÃÂr al-Ḥadëth al-Ashrafiyya, a leading ḥadëth academy in Damascus, in 1319. And although he professed the Ash'arë doctrine suspicion continued about his true beliefs. He travelled across the Mamluk Sultanate of Egypt, Syria (), and ḤijÃÂz and became the greatest `Ilm al-rijÃÂl () scholar of the Muslim world and an expert grammarian and philologist of Arabic. He died at Dar al-Hadith al-Ashrafiyyah in Damascus in 1341/2 and was buried in the Sufiyyah graveyard.