Shama-il Tirmidhi
Shama-il Tirmidhi Chapter 008, Hadith Number 015 (067).
Hadith Section/Book: Shama-il Tirmidhi Chapter 08. The Dressing Of Rasoolullah
Ummul Mu-mineen, 'Aayeshah (R.A) reports: "Rasulullah (S.A.W) once left the house in the morning, wearing a sheet made of black hair."