Abu Dawud Book 27, Hadith Number 4051.
Chapter : Washing the clothes and wearing wornout and dirty clothes.
Narated By Jabir ibn Abdullah : The Apostle of Allah (PBUH) paid visit to us, and saw a dishevelled man whose hair was disordered. He said: Could this man not find something to make his hair lie down? He saw another man wearing dirty clothes and said: Could this man not find something to wash his garments with.