Sahih al-Bukhari 5399
صحيح البخاري#5399SahihNarrated Abu Juhaifa:While I was with the Prophet (ﷺ) he said to a man who was with him, "I do not take my meals while leaning
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: 70:27