The Book Pertaining to Clothes and Decoration (Kitab Al-Libas wa'l-Zinah)

Muslim :: Book 24 : Hadith 5156

Suwaid b. Ghafala said: 'Umar addressed us at a place known as Jabiya (Syria) and he said: Allah's Apostle (may peace be upon him) forbade us the wearing of silk but to the extent of two or three fingers or four fingers.

Source materials are from the University of Southern California MSA site
Hadith eBooks converted from Imaan Star