Sahih al-Bukhari 1188
صحيح البخاري#1188SahihNarrated Quza'a: I heard Abu Said saying four words. He said, "I heard the Prophet (ﷺ) (saying the following narrative)." He had participated in twelve holy battles with the Prophet
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: 20:1