Hameed bin Hilal حميد بن هلال · Funerals (Kitab Al-Jana'iz)

I said to the Prophet (ﷺ): 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.

"And deepen (the graves)."