Numbers 18:11-12

11“All the sacred offerings and special offerings presented to me when the Israelites lift them up before the altar also belong to you. I have given them to you and to your sons and daughters as your permanent share. Any member of your family who is ceremonially clean may eat of these offerings.

12“I also give you the harvest gifts brought by the people as offerings to the Lord—the best of the olive oil, new wine, and grain.