Sahih al-Bukhari 939
صحيح البخاري#939SahihNarrated Sahl:As above with the addition: We never had an afternoon nap nor meals except after offering the Jumua prayer
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: 11:63