Leviticus 25:32-36

As for the cities of the Levites, the Levites have a permanent right of redemption for the houses of the cities which are their possession.

What, therefore, belongs to the Levites may be redeemed, and a house sale in the city of this possession reverts in the jubilee, because the houses of the cities of the Levites are their possession among the sons of Israel.

But pasture fields of their cities shall not be sold, for that is their permanent possession. Of Poor Countrymen

‘Now in case a countryman of yours becomes poor and his means among you falter, then you are to sustain him, like a stranger or a resident, so that he may live with you.

Do not take any kind of interest from him, but fear your God, so that your countryman may live with you.