From Sahih Bukhari (Hadith 2616):
Narrated Anas:A Jubba (i.e. cloak) made of thick silken cloth was presented to the Prophet. The Prophet (ﷺ) used to forbid people to wear silk. So, the people were pleased to see it. The Prophet (ﷺ) said, "By Him in Whose Hands Muhammad's soul is, the handkerchiefs of Sa`d bin Mu`adh in Paradise are better than this." Anas added, "The present was sent to the Prophet (ﷺ) by Ukaidir (a Christian) from Dauma
Reference: Bukhari 2616