Sahih Muslim 137
صحيح مسلم#137SahihIt is narrated on the authority of Humran that he heard Uthman saying this:I heard the Messenger of Allah (ﷺ) uttering these words (as stated above)
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: 1:44