Sahih al-Bukhari 2281
صحيح البخاري#2281SahihNarrated Anas bin Malik:The Prophet (ﷺ) sent for a slave who had the profession of cupping, and he cupped him. The Prophet (ﷺ) ordered that he be paid one or two Sas, or one or two Mudds of foodstuff, and appealed to his masters to reduce his taxes:
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 37:21