Sahih al-Bukhari 6975
صحيح البخاري#6975SahihNarrated Ibn `Abbas:The Prophet (ﷺ) said, "The one who takes back his gift is like a dog swallowing its own vomit, and we (believers) should not act according to this bad example
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: 90:22