Sahih Muslim 6108
صحيح مسلم#6108SahihAbu Musa Ash'ari reported that Allah's Messenger (ﷺ) mentioned many names of his and said:I am Muhammad, Ahmad. Muqaffi (the last in succession), Hashir, the Prophet of repentance, and the Prophet of Mercy
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: 43:166