Sahih al-Bukhari 6762
صحيح البخاري#6762SahihNarrated Anas bin Malik:The Prophet (ﷺ) said, "The son of the sister of some people is from them or from their own selves
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: 85:39