Numbers:6:3-4
nkjv@Numbers:6:3 @ he shall separate himself from wine and similar drink; he shall drink neither vinegar made from wine nor vinegar made from similar drink; neither shall he drink any grape juice, nor eat fresh grapes or raisins.
nkjv@Numbers:6:4 @ All the days of his separation he shall eat nothing that is produced by the grapevine, from seed to skin.