Sahih Muslim Book 24, Hadith Number 5184.

Chapter : Modesty in case of garments and preference for the coarse cloth for wearing and the permissibility of wearing cloth made of (camel’s) hair.

‘Aisha reported that Allah’s Apostle (may peace be upon him) went out one morning wearing a blanket made of (camel’s or sheep’s) black hair with patterns of camel saddles upon it.