Abū ʿAbd Allāh ibn al-Akhram said: “Muḥammad ibn Naṣr returned from his second journey in the year 260 AH, took up residence in Nīshāpūr, and kept his business running there. He entered into a profit-sharing partnership, while devoting himself to study and worship. In 275 AH he set out for Samarqand, where he remained, while his partner stayed in Nīshāpūr. During his years in Nīshāpūr he became the leading scholar and mufti after the death of Muḥammad ibn Yaḥyā, for Ḥaykān⦗1⦘—that is, Yaḥyā the son of Muḥammad ibn Yaḥyā—and all who came after him acknowledged his excellence and precedence.
The ḥāfiẓ Ibn al-Akhram related: “Ismāʿīl ibn Qutayba told us, ‘I heard Muḥammad ibn Yaḥyā on more than one occasion; whenever he was asked about a problem he would reply, “Ask Abū ʿAbd Allāh al-Marwazī.” ’ ”
Abū Bakr al-Ṣibghī said: “I met two imams from whom I was not granted the chance to hear: Abū Ḥātim al-Rāzī and Muḥammad ibn Naṣr al-Marwazī. As for Ibn Naṣr, I never saw anyone perform the prayer more perfectly than he did. I was informed that a hornet once settled on his forehead, the blood ran down his face, and yet he did not move.”
Muḥammad ibn Yaʿqūb ibn al-Akhram added: “I have never seen a finer prayer than that of Muḥammad ibn Naṣr. Flies would land on his ear, blood would trickle down, and he would not brush them away. We used to marvel at the beauty of his prayer, his humility, and his composure in the ritual: he would rest his chin—”