Sahih al-Bukhari 5826
صحيح البخاري#5826SahihNarrated Sa`d:On the day of the battle of Uhud, on the right and on the left of the Prophet (ﷺ) were two men wearing white clothes, and I had neither seen them before, nor did I see them afterwards
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: 77:43