Numbers 18:19-21 New American Standard Bible (NASB)

¹⁹ All the offerings of the holy gifts, which the sons of Israel offer to the Lord, I have given to you and your sons and your daughters with you, as a permanent allotment. It is a permanent covenant of salt before the Lord to you and your ^[a]descendants with you.” ²⁰ Then the Lord said to Aaron, “You shall have no inheritance in their land nor own any portion among them; I am your portion and your inheritance among the sons of Israel.

²¹ “To the sons of Levi, behold, I have given all the tithe in Israel as an inheritance, in return for their service which they perform, the service of the tent of meeting.