Abu al-Nadr al-Fami said: “Al-ʿUmayri set himself apart from the men of his age by his knowledge, his asceticism, his exactitude in transmission, his eagerness to teach hadith, his detachment from this world (1), his disdain for its fleeting spoils, and his focus on the Hereafter.
Abu ʿAbd Allah al-Daqqaq remarked, “Al-ʿUmayri has no equal in Khurasan—let alone in Herat!”
In his Risala he also wrote: “Among all my teachers I have never seen anyone like the meticulous, ascetic Imam, Abu ʿAbd Allah al-ʿUmayri.”
Another scholar said: “He was an imam in jurisprudence, a model to emulate, and possessed a vast repertoire of hadith.”
Al-Samʿani stated: “He performed the pilgrimage, traveled to Yemen, and in Mecca he heard hadith from Muḥammad ibn al-Ḥusayn al-Ṣanʿānī; in Nīshāpūr from al-Ḥīrī and al-Ṣayrafī; in Baghdad from Ibn Shādhān, al-Ḥurfi, and Ibn Dust; and in Herat from Yaḥyā ibn ʿAmmār and Abū Yaʿqūb al-Qarrāb.”
Those who transmitted from him include Ibn Ṭāhir, al-Muʾtaman, Muḥammad ibn Abī ʿAlī al-Hamadhānī, Abū al-Waqt, ʿAlī ibn Ḥamza, Abu al-Nadr al-Fami (2), and al-Junayd al-Qāʾinī (3).