Numbers 18:23-24

23But the Levites shall perform the work of the tabernacle of meeting, and they shall bear their iniquity; it shall be a statute forever, throughout your generations, that among the children of Israel they shall have no inheritance.

24For the tithes of the children of Israel, which they offer up as a heave offering to the Lord, I have given to the Levites as an inheritance; therefore I have said to them, ‘Among the children of Israel they shall have no inheritance.’ ”