Sahih al-Bukhari 1317
صحيح البخاري#1317SahihNarrated Jabir bin `Abdullah:Allah's Messenger (ﷺ) offered the funeral prayer for An-Najashi 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: 23:74