Numbers 6:10

8All the days of his separation he is holy to the LORD.

9“‘If any man dies very suddenly beside him, and he defiles the head of his separation, then he shall shave his head in the day of his cleansing. On the seventh day he shall shave it.

10On the eighth day he shall bring two turtledoves or two young pigeons to the priest, to the door of the Tent of Meeting.

11The priest shall offer one for a sin offering, and the other for a burnt offering, and make atonement for him, because he sinned by reason of the dead, and shall make his head holy that same day.

12He shall separate to the LORD the days of his separation, and shall bring a male lamb a year old for a trespass offering; but the former days shall be void, because his separation was defiled.