Yahya ibn Ma'in

Yahya ibn Ma'in (full name Abu Zakariyya Yahya ibn Ma'in ibn 'Awn) was one of the founding figures of Muslim hadith criticism. He is traditionally reported to have been born around 158 AH (c. 774-775 CE); his family is described in later tradition as of client (mawla) background associated with al-Anbar in Iraq, and he was raised in Baghdad, the Abbasid capital.

He became a leading authority in 'ilm al-rijal — the "science of men," meaning the biographical scrutiny of the people who transmit hadith — and in al-jarh wa-l-ta'dil, the disciplined practice of "impugning and authenticating" those transmitters to judge a report's reliability. Reports preserved by later writers say he spent a large inherited fortune travelling to collect and test traditions. Contemporaries and later biographers, including al-Dhahabi, ranked him among the very greatest critics; he is grouped with Ali ibn al-Madini, Abu Bakr ibn Abi Shayba, and Ahmad ibn Hanbal, with whom he was closely associated.

His lifetime overlapped the mihna, the caliphal "inquisition" begun under al-Ma'mun that pressed scholars to affirm that the Qur'an was created. In the Sunni tradition Ibn Ma'in is held to have privately rejected that doctrine; accounts of how he behaved under interrogation vary, and tradition does not single him out for a heroic refusal.

His work survives mainly through his students, especially the recension of his Tarikh transmitted by al-Dawri, and the rijal notices later compilers drew on. He is reported to have died in Dhu'l-Hijja 233 AH (848 CE) at Medina while on the pilgrimage. The place of death is not agreed in the sources — the classical biographical tradition favours Medina during the hajj, while some modern summaries instead give Baghdad. Reports place his burial at Medina, though the specific cemetery is not securely attested.