Khwarazmshah Maʾmūn b. Muḥammad b. ʿAlī b. Maʾmūn, who received him with honor, showed him every courtesy, lavished gifts upon him, and even built him a madrasa in Baghdad to lodge the jurists of Khwarazm. Abū al-Ḥusayn used to teach there, and each year the Khwarazmshah would send him a sum of money.
Ibn Arsalān adds: I myself saw this madrasa—already in ruins—near Qaṭīʿat al-Rabīʿ. (1)
128 – Abū ʿAlī al-Rūdhbārī al-Ḥusayn b. Muḥammad b. Muḥammad *
The imām and hadith transmitter, Abū ʿAlī al-Ḥusayn b. Muḥammad b. Muḥammad b. ʿAlī b. Ḥātim al-Rūdhbārī, al-Ṭūsī.
He studied under Ismāʿīl al-Ṣaffār, ʿAbd Allāh b. ʿUmar b. Shawdhāb, Ibn Dāsa, al-Ḥusayn b. al-Ḥasan al-Ṭūsī, and a number of others.
He narrated Sunan Abī Dāwūd in Nīshāpūr, where a special session was convened for him in the congregational mosque. He later fell ill and was taken back to his native town of al-Ṭābarān, where he died in Rabīʿ al-Awwal, 403 AH. (2)
I say: Among those who transmitted from him were al-Ḥākim—his contemporary—Abū Bakr al-Bayhaqī, and Abū
(1) The nisba is traced back to al-Rabiʿ b. Yunus, the chamberlain (hajib) and freedman of the Abbasid caliph al-Mansur, and father of al-Fadl, al-Mansur’s vizier. Al-Rabiʿ’s grant (qatiʿa) in al-Karkh comprised farmland belonging to the inhabitants of a village called Bayawari in the district of Baduriya. The grant was actually made up of two tracts, an “inner” and an “outer” one: the inner section was assigned to him by al-Mansur, the outer later by al-Mahdi. Merchants eventually settled there, and the land passed into their hands rather than remaining with al-Rabiʿ’s descendants. See Muʿjam al-Buldan, 4/377. * Bibliographic parallels: al-Ansab, 6/180; al-Lubab, 2/41; al-ʿIbar, 3/85; Shadharat al-Dhahab, 3/168. Al-Samʿani, commenting on the nisba al-Rawdhbari, writes: “The word designates localities situated on large rivers that are called al-Rawdhbar. Such places are found in various regions; one of them lies at the gate of Tabaran in Tus and is itself called al-Rawdhbar. I myself once lodged for a time at Bab al-Rawdhbar.” (2) Al-Ansab, 6/180.