Ramahurmuzi

Abū Muḥammad al-Ḥasan ibn ʻAbd al-Raḥmān ibn Khallād al-Rāmahurmuzī () (?–before 971 CE/360 AH), commonly referred to in medieval literature as Ibn al-Khallād, was a Persian hadith specialist and author who wrote one of the first comprehensive books compiled in hadith terminology literature, al-Muḥaddith al-Fāṣil bayn al-Rāwī wa al-Wāʻī.

==Biography== Al-Rāmahurmuzī's specific date of birth remains undetermined, but can be approximated based upon the dates of his teachers' deaths, placing his birth roughly 100 years prior to his own death. Therefore, 871/260 is a fairly sound estimate, according to The Encyclopaedia of Islam, based on the long life spans generally assumed for early hadith specialists. The name al-Rāmahurmuzī is an ascription to Rām-hurmuz a town in Khūzistān in present-day south-western Iran. The significance of Rām-hurmuz was its central location at the intersection of Ahwāz, Shūshtar, Iṣfahān and Fārs between the Āb -i Kurdistān and the Gūpāl rivers.