Numbers 6:5-11

5‘All the time of the vow of his separation no razor shall be used on his head. Until the time of his separation to the Lord is completed, he shall be holy, and shall let the hair of his head grow long.

6‘All the time that he separates himself to the Lord he shall not go near a dead body.

7He shall not make himself [ceremonially] unclean for his father, mother, brother, or sister, when they die, because [the responsibility for] his separation to God is on his head.

8All the time of his separation he is holy to the Lord.

9‘If a man dies very suddenly beside him, and he defiles his dedicated head, then he shall shave his head on the day that he becomes [ceremonially] clean; he shall shave it on the seventh day [the end of the purification period].

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

11The priest shall offer the one as a sin offering and the other as a burnt offering and make atonement for him concerning his sin because of the [dead] body. He shall consecrate his head the same day,