Numbers 18:12-15

12All the best of the oil, and all the best of the wine, and of the wheat, the firstfruits of them which they shall offer unto Yhwh, them have I given thee.1

13And whatsoever is first ripe in the land, which they shall bring unto Yhwh, shall be thine; every one that is clean in thine house shall eat of it.

14Every thing devoted in Israel shall be thine.

15Every thing that openeth the matrix in all flesh, which they bring unto Yhwh, whether it be of men or beasts, shall be thine: nevertheless the firstborn of man shalt thou surely redeem, and the firstling of unclean beasts shalt thou redeem.