Sahih Muslim Book 31, Hadith Number 6038.

This hadith has been reported on the authority of Shu’ba combining the two chains of transmitters. Anas b Malik reported that Allah’s Messenger (may peace be upon him) was presented a garment of sundus and he prohibited the use of silk. The persons admired it, whereupon he said: By Him in Whose Hand is the life of Muhammad, the kerchiefs of Sa’d b. Mu’adh in Paradise are better than this.