Numbers 6:2-4

2Speak unto the children of Israel, and say unto them, If a man or a woman have vowed the special vow of a Nazarite, to consecrate themselves to Jehovah;

3he shall separate himself from wine and strong drink: he shall drink no vinegar of wine, nor vinegar of strong drink, neither shall he drink any liquor of grapes, nor eat grapes, fresh or dried.

4All the days of his separation shall he eat nothing that is made of the vine, from the seed-stones, even to the skin.