Sahih al-Bukhari 4140
صحيح البخاري#4140SahihNarrated Jabir bin `Abdullah Al-Ansari:I saw the Prophet (ﷺ) offering his Nawafil prayer on his Mount facing the East during the Ghazwa of Anmar
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: 64:184