Numbers 6:9-11

9And if any one die unexpectedly by him suddenly, and he hath defiled the head of his consecration, then he shall shave his head on the day of his cleansing; on the seventh day shall he shave it.

10And on the eighth day he shall bring two turtle-doves, or two young pigeons, to the priest, at the entrance of the tent of meeting.

11And the priest shall offer one for a sin-offering, and the other for a burnt-offering, and make an atonement for him, for that he sinned by the dead person; and he shall hallow his head that same day.