" well-known from the ḥadīth of al-Aʿmash, authentic, narrated by a group of the early scholars from al-Fuḍayl." I said: al-Shaybānī's name is Saʿd ibn Iyās. Jarīr also narrated it from al-Aʿmash. It was recorded by al-Ḥākim (2/90) who said: "Authentic according to the criteria of al-Bukhārī and Muslim," and al-Dhahabī agreed with him, and it is as they said.

"Whoever practices medicine without being known for it is liable." It was recorded by Abū Dāwūd (4586), al-Nasāʾī (2/250), Ibn Mājah (3466), al-Dāraqutnī (p. 370), al-Ḥākim (4/212), and al-Bayhaqī (141) through the route of al-Walīd ibn Muslim from Ibn Jurayj from ʿAmr ibn Shuʿayb from his father from his grandfather that the Messenger of Allāh (ṣallá Allāhu ʿalayhi wa-sallam) said: he mentioned it. Abū Dāwūd said: "Only al-Walīd narrated it; we do not know if it is authentic or not." As for al-Ḥākim, he said: "Authentic isnād!" and al-Dhahabī agreed with him! I said: This is unlikely, as Ibn Jurayj and al-Walīd are known to practice tadlīs and narrated it with ʿanʿanah, except in the narrations of al-Dāraqutnī and al-Ḥākim where al-Walīd explicitly stated he heard it. Thus, the flaw is confined to the ʿanʿanah of his teacher Ibn Jurayj