Sahih al-Bukhari 6053
صحيح البخاري#6053SahihNarrated Abu Usaid As-Sa`idi:The Prophet (ﷺ) said, "The best family among the Ansar is the Banu An-Najjar
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: 78:83