Aḥmad ibn al-Ḥasan ibn Aḥmad ibn Khayrūn al-Baghdādī, the Qur’an reciter—better known as Ibn al-Bāqillānī.
He was born in 404 AH.
Those who granted him written authorization included: Abū al-Ḥasan Muḥammad ibn Aḥmad ibn al-Ṣalt al-Ahwāzī; Abū al-Ḥusayn ibn al-Mutayyim; Muḥammad ibn Aḥmad ibn al-Maḥāmilī; Abū al-Ḥasan ibn Rizqawayh; Abū al-Ḥusayn ibn Bishrān; Abū Naṣr Ḥasanūn al-Narsī; Muḥammad ibn Fāris al-Ghūrī; Muḥammad ibn ʿAbd Allah ibn Abān al-Naṣībī; Ismāʿīl ibn ʿAbbās; Abū Sahl Maḥmūd ibn ʿUmar al-ʿUkbarī; the judge Abū Isḥāq al-Bāqarḥī; and several others.
He in turn heard hadith from Abū ʿAlī ibn Shādhān, Abū Bakr al-Barqānī, ʿUthmān ibn Dust al-ʿAllāf, Abū al-Qāsim al-Ḥurfī, Aḥmad ibn ʿAbd Allah ibn al-Maḥāmilī, ʿAbd al-Malik ibn Bishrān, Abū Yaʿlā Aḥmad ibn ʿAbd al-Wāḥid, al-Ḥasan ibn Muḥammad al-Khallāl, and many others. He even sought out the pupils of al-Mukhalliṣ and the like, and he possessed unique narrations and authorizations.
Those who transmitted from him include his own teacher Abū Bakr al-Khaṭīb, Abū ʿAlī ibn Sukkara, Abū ʿĀmir al-ʿAbdarī, Abū al-Qāsim ibn al-Samarkandī, Ismāʿīl ibn Muḥammad al-Ṭalḥī—the ḥadith master—Abū Bakr, the judge of the maristan (hospital), Ismāʿīl ibn Abī Saʿd al-Ṣūfī, ʿAbd al-Wahhāb al-Anmāṭī, Abū al-Fatḥ ibn al-Baṭṭī, and many others besides.
Abū Saʿd al-Samʿānī said of him: “Reliable, upright, precise, and expansive in transmission. He wrote copiously in his own hand and was well-versed in hadith. I heard Abū Manṣūr ibn Khayrūn…”