Sahih Muslim 6523
صحيح مسلم#6523SahihAnas b. Malik reported:I heard Allah's Messenger (ﷺ) as saying: He who is desirous that his means of sustenance should be expanded for him or his age may be lengthened, should join the tie of relationship
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 45:23