Sahih al-Bukhari 496
صحيح البخاري#496SahihNarrated Sahl (bin Sa`d):The distance between the Musalla of Allah's Messenger (ﷺ) and the wall was just sufficient for a sheep to pass through
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: 8:143