Abu Dawud
Funerals
Book Number: 014 / Hadith Number: 3208
Narated By Ali ibn AbuTalib : I said to the Prophet (pbuh): Your old and astray uncle has died. He said: Go and bury your father, and then do not do anything until you come to me. So I went, buried him and came to him. He ordered me (to take a bath), so I took a bath, and he prayed for me.