Leviticus 25:14

25:14 If you make a sale to your fellow citizen or buy from your fellow citizen, no one is to wrong his brother.

Leviticus 25:32

25:32 As for the cities of the Levites, the houses in the cities which they possess, the Levites must have a perpetual right of redemption.

Leviticus 25:39

25:39 “‘If your brother becomes impoverished with regard to you so that he sells himself to you, you must not subject him to slave service.