Sahih Muslim 2386
صحيح مسلم#2386SahihHakim b. Hizam reported Allah's Messenger (ﷺ) having said this:The most excellent Sadaqa or the best of Sadaqa is that after giving which the (giver) remains rich and the upper hand is better than the lower hand, and begin from the members of your household
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: 12:123