Numbers 6:3-5

New Century Version

³ During this time, they must not drink wine or beer, or vinegar made from wine or beer. They must not even drink grape juice or eat grapes or raisins. ⁴ While they are Nazirites, they must not eat anything that comes from the grapevine, even the seeds or the skin.

⁵ “‘During the time they have promised to belong to the Lord, they must not cut their hair. They must be holy until this special time is over. They must let their hair grow long.