Sahih Muslim 5417
صحيح مسلم#5417SahihSuwaid b. Ghafala said:'Umar addressed us at a place known as Jabiya (Syria) and he said: Allah's Apostle (ﷺ) forbade us the wearing of silk but to the extent of two or three fingers or four fingers
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: 37:32