Leviticus 25:32-33

32As for athe cities of the Levites, the Levites may redeem at any time the houses in the cities they possess. 33And if one of the Levites exercises his right of redemption, then the house that was sold in a city they possess shall be released in the jubilee. For the houses in the cities of the Levites are their possession among the people of Israel.
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