“It is well known through al-Aʿmash; it is established. A number of early scholars narrated it from al-Fuḍayl.”

I say: al-Shaybānī’s name was Saʿd ibn Iyās. Jarīr also corroborated him from al-Aʿmash with this report. Al-Ḥākim narrated it (2/90) and said: “Authentic according to the criteria of the two Shaykhs.” Al-Dhahabī concurred with him, and it is as they said.

635 — “Whoever practises medicine without having medical knowledge is liable.”

It was narrated by Abū Dāwūd (4586), al-Nasāʾī (2/250), Ibn Mājah (3466), al-Dāraquṭnī (p. 370), al-Ḥākim (4/212), and al-Bayhaqī (141), through al-Walīd ibn Muslim, from Ibn Jurayj, from ʿAmr ibn Shuʿayb, from his father, from his grandfather: that the Messenger of Allah said this. Abū Dāwūd said: “No one narrated it except al-Walīd. We do not know whether it is authentic or not.” As for al-Ḥākim, he said: “Its chain of transmission is authentic!” Al-Dhahabī agreed with him.

I say: This is far-fetched, for Ibn Jurayj and al-Walīd both practised concealment in transmission and related it using an ambiguous transmission formula. However, in the versions of al-Dāraquṭnī and al-Ḥākim, al-Walīd explicitly stated that he had heard it directly. Thus, the defect is confined to the ambiguous transmission formula used by his shaykh, Ibn Jurayj.