Sahih al-Bukhari 1938
صحيح البخاري#1938SahihNarrated Ibn `Abbas:The Prophet (ﷺ) was cupped while he was in the state of Ihram, and also while he was observing a fast
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: 30:45