Numbers 6:3-5

Complete Jewish Bible

³ he is to abstain from wine and other intoxicating liquor, he is not to drink vinegar from either source, he is not to drink grape juice, and he is not to eat grapes or raisins. ⁴ As long as he remains a nazir he is to eat nothing derived from the grapevine, not even the grape-skins or the seeds.

⁵ “‘Throughout the period of his vow as a nazir, he is not to shave his head. Until the end of the time for which he has consecrated himself to Adonai he is to be holy: he is to let the hair on his head grow long.