Sahih Muslim 4324
صحيح مسلم#4324SahihAbu Huraira reported Allah's Messenger (ﷺ) as saying:It is good for a slave that he worships Allah well, and serves his master (well). It is good for him
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: 27:71