Sahih al-Bukhari 1093
صحيح البخاري#1093SahihNarrated `Abdullah bin 'Amir from his father who said:I saw the Prophet (ﷺ) offering the prayer on his mount (Rahila) whatever direction it took
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: 18:13