Leviticus 25:32-34

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 amongst the children of Israel.

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