135 – Yaʿqūb ibn ʿUbayd, Abū Yūsuf al-Nahrutayri*
An Imām and ḥadīth scholar, Abū Yūsuf al-Nahrutayri (1) was counted among the senior shaykhs of Iraq. He traveled in search of knowledge and acquired considerable mastery.
He received ḥadīth from Wakīʿ, ʿAlī ibn ʿĀṣim, Abū Usāmah, Abū Mus-hir, Hishām ibn ʿAmmār, and several others.
Those who reported from him include Ibn Abī al-Dunyā, Abū Bakr ibn Abī Dāwūd, ʿAbd Allāh ibn Muḥammad al-Ḥāmiḍ, and Muḥammad ibn Makhlad.
Ibn Abī Ḥātim said, “My father heard from him, and he is truthful (2).”
Ibn Shāhīn stated, “He died in Shawwāl of the year 261 AH.”
I say: he passed away in the early 290s AH—may Allah have mercy on him.
136 – Ibn Shākir, Muḥammad ibn Mūsā ibn Shākir**
A master of geometry, the brother of Aḥmad and al-Ḥasan. Their father was among the leading authorities in the discipline, and his sons followed suit. They are associated with the Banu Mūsā Book of Ingenious Devices (3).