Numbers 6:2-7

2“Speak to the Israelites and tell them: When a man or woman makes a special vow, a Nazirite vow, to consecrate himself to the Lord,

3he is to abstain from wine and beer. He must not drink vinegar made from wine or from beer. He must not drink any grape juice or eat fresh grapes or raisins.

4He is not to eat anything produced by the grapevine, from seeds to skin, during the period of his consecration.

5“You must not cut his hair throughout the time of his vow of consecration. He may be holy until the time is completed during which he consecrates himself to the Lord; he is to let the hair of his head grow long.

6He must not go near a dead body during the time he consecrates himself to the Lord.

7He is not to defile himself for his father or mother, or his brother or sister, when they die, while the mark of consecration to his God is on his head.