Numbers 18:11-13

11“The contribution of their gifts also belongs to you. I have given all the Israelites’ presentation offerings to you and to your sons and daughters as a permanent statute. Every ceremonially clean person in your house may eat it.

12I am giving you all the best of the fresh oil, new wine, and grain, which the Israelites give to the Lord as their firstfruits.

13The firstfruits of all that is in their land, which they bring to the Lord, belong to you. Every clean person in your house may eat them.