Sahih al-Bukhari 3878
صحيح البخاري#3878SahihNarrated Jabir bin `Abdullah Al-Ansari:Allah's Messenger (ﷺ) led the funeral prayer for the Negus and made us stand in rows behind him and I was in the second or third row
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: 63:103