Numbers 6:5-9

5“ ‘During the entire period of their Nazirite vow, no razor may be used on their head. They must be holy until the period of their dedication to the Lord is over; they must let their hair grow long. 6“ ‘Throughout the period of their dedication to the Lord, the Nazirite must not go near a dead body. 7Even if their own father or mother or brother or sister dies, they must not make themselves ceremonially unclean on account of them, because the symbol of their dedication to God is on their head. 8Throughout the period of their dedication, they are consecrated to the Lord. 9“ ‘If someone dies suddenly in the Nazirite’s presence, thus defiling the hair that symbolizes their dedication, they must shave their head on the seventh day—the day of their cleansing.