Sahih Muslim 5425
صحيح مسلم#5425SahihAnas reported that Allah's Messenger (ﷺ) said:He who wore silk in this world would not wear it in the Hereafter
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: 37:40