Sahih al-Bukhari 2976
صحيح البخاري#2976SahihNarrated Nafi bin Jubair: I heard Al Abbas telling Az-Zubair, "The Prophet (ﷺ) ordered you to fix the flag here
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: 56:185