Numbers 18:11, 18-19

“This also is yours: whatever is set aside from the gifts of all the wave offerings of the Israelites. I give this to you and your sons and daughters as your perpetual share. Everyone in your household who is ceremonially clean may eat it.

Their meat is to be yours, just as the breast of the wave offering and the right thigh are yours. Whatever is set aside from the holy offerings the Israelites present to the LORD I give to you and your sons and daughters as your perpetual share. It is an everlasting covenant of salt before the LORD for both you and your offspring.”