Sahih Muslim 6351
صحيح مسلم#6351SahihAnas b Malik reported that Allah's Messenger (ﷺ) was presented a garment of sundus and he prohibited the use of silk. The persons admired it, whereupon he said:By Him in Whose Hand is the life of Muhammad, the kerchiefs of Sa'd b. Mu'adh in Paradise are better than this
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: 44:181