All the days of his separation he shall eat nothing that is produced by the grapevine, from seed to skin.
Numbers 6:4
Surrounding context
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.
6:4 All the days of his separation he shall eat nothing that is produced by the grapevine, from seed to skin.
6:5 "All the days of the vow of his separation no razor shall come upon his head; until the days are fulfilled for which he separated himself to the LORD, he shall be holy. Then he shall let the locks of the hair of his head grow.