Numbers 6:4-6

King James Version

⁴ All the days of his separation shall he eat nothing that is made of the vine tree, from the kernels even to the husk.

⁵ All the days of the vow of his separation there shall no razor come upon his head: until the days be fulfilled, in the which he separateth himself unto the Lord, he shall be holy, and shall let the locks of the hair of his head grow.

⁶ All the days that he separateth himself unto the Lord he shall come at no dead body.