Numbers 6:1-4

Again the Lord spoke to Moses, saying,

“Speak to the sons of Israel and say to them, ‘When a man or woman makes a special vow, namely, the vow of a Nazirite, to live as a Nazirite for the Lord,

he shall abstain from wine and strong drink; he shall consume no vinegar, whether made from wine or strong drink, nor shall he drink any grape juice nor eat fresh or dried grapes.

All the days of his consecration he shall not eat anything that is produced from the grape vine, from the seeds even to the skin.