Leviticus 25:36

The Levites may redeem the house that was sold, and the city of his possession, and it shall be released in the Jubilee; for the houses of the cities of the Levites are their possession among the children of Israel.

But the field of the pasture lands of their cities may not be sold, for it is their perpetual possession.

“‘If your brother has become poor, and his hand can’t support himself among you, then you shall uphold him. He shall live with you like an alien and a temporary resident.

You shall not lend him your money at interest, nor give him your food for profit.

I am the LORD your God, who brought you out of the land of Egypt, to give you the land of Canaan, and to be your God.

“‘If your brother has grown poor among you, and sells himself to you, you shall not make him to serve as a slave.