Numbers 6:9

6 All the days that he separateth himself unto Jehovah he shall not come near to a dead body.

7 He shall not make himself unclean for his father, or for his mother, for his brother, or for his sister, when they die; because his separation unto God is upon his head.

8 All the days of his separation he is holy unto Jehovah.

9 And if any man die very suddenly beside him, and he defile the head of his separation; then he shall shave his head in the day of his cleansing, on the seventh day shall he shave it.

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

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

12 And he shall separate unto Jehovah the days of his separation, and shall bring a he-lamb a year old for a trespass-offering; but the former days shall be void, because his separation was defiled.