Sahih Muslim 1134
صحيح مسلم#1134SahihSahl b. Sa'd al-Si'idi reported:Between the place of worship where the Messenger of Allah (ﷺ) prayed and the wall, there was a gap through which a goat could pass
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 4:296