Numbers 6:4-6

Modern English Version

⁴ All the days of his separation he will eat nothing that is made of the grapevine, from the seed to the skin.

⁵ All the days of the vow of his separation no razor will come on his head until the days are fulfilled in which he separates himself to the Lord. He will be holy and will let the locks of the hair of his head grow. ⁶ All the days that he separates himself to the Lord he will not approach a dead body.