Sahih Muslim 4318
صحيح مسلم#4318SahihIbn Umar reported Allah's Messenger (ﷺ) as saying:When a slave looks to the welfare of his master and worships Allah well, he has two rewards 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: 27:65