Sahih Bukhari Volume 3, Book 47, Hadith Number 785.

Narated By Anas : A Jubba (i.e. cloak) made of thick silken cloth was presented to the Prophet. The Prophet used to forbid people to wear silk. So, the people were pleased to see it. The Prophet said, “By Him in Whose Hands Muhammad’s soul is, the handkerchiefs of Sad bin Mu’adh in Paradise are better than this.” Anas added, “The present was sent to the Prophet by Ukaidir (a Christian) from Dauma.”