Numbers 18:23-24

23Only the Levites will do the work at the tent of meeting. They will be responsible for their own sins. This is a permanent law for future generations. They will own no property as the other Israelites will.

24Instead, I will give the Levites what the Israelites contribute to the Lord—one-tenth of the Israelites’ income. This is why I said about them, ‘They will own no property as the other Israelites do.’ ”