Sahih Muslim 6834
صحيح مسلم#6834SahihA hadith like this has been transmitted on the authority of A'mash with the same chain of transmitters and he (further) said:There is for him ten like that (the good he performed) or more than that
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: 48:30