Sahih Muslim 5433
صحيح مسلم#5433SahihAnas b. Malik reported that 'Abd al-Rahman b. Auf and Zu'bair. b. 'Awwam complained to Allah's Messenger (ﷺ) about lice; he granted them concession to wear shirts of silk
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: 37:48