Leviticus 25:31-37

³¹But the houses in the villages which have not a wall round about them, shall be reckoned as the fields of the country: they shall always be redeemable, and they shall go out in the release.

³²And the cities of the Levites, the houses of the cities in their possession, shall be always redeemable to the Levites.

³³And if anyone shall redeem a house of the Levites, then shall their sale of the houses of their possession go out in the release; because the houses of the cities of the Levites are their possession in the midst of the children of Israel.

³⁴And the lands set apart for their cities shall not be sold, because this is their perpetual possession.

³⁵And if thy brother who is with thee become poor, and he fail in resources with thee, thou shalt help him as a stranger and a sojourner, and thy brother shall live with thee.

³⁶Thou shalt not receive from him interest, nor increase: and thou shalt fear thy God: I am the Lord: and thy brother shall live with thee.

³⁷Thou shalt not lend thy money to him at interest, and thou shalt not lend thy meat to him to be returned with increase.