Leviticus 25:35

31But the houses of the villages which have no wall around them shall be accounted for with the fields of the country: they may be redeemed, and they shall be released in the Jubilee.

32“‘Nevertheless, in the cities of the Levites, the Levites may redeem the houses in the cities of their possession at any time.

33The 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.

34But the field of the pasture lands of their cities may not be sold, for it is their perpetual possession.

35“‘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.

36Take no interest from him or profit; but fear your God, that your brother may live among you.

37You shall not lend him your money at interest, nor give him your food for profit.

38I 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.

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