Sahih Muslim 2965
صحيح مسلم#2965SahihAbu Dharr (Allah be pleased with him) said that Tamattu' in Hajj was a special (concession) only for the Companions of Muhammad (ﷺ)
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: 15:174