Leviticus 25:32

וערי הלוים THE CITIES OF THE LEVITES… [MAY BE REDEEMED AT ANY TIME] — This refers only to the forty-eight cities which had been given to them (cf. Numbers 35:6. 7). (But if the Levites built another city for themselves, or if a Levite possesses a house in a city inhabited by Israelites these do not come under this law). גאלת עולם [THE LEVITES SHALL HAVE] THE RIGHT OF REDEMPTION AT ANY TIME — This means that they (Levites) may redeem at once — even before the end of two years — if they sold a field of those fields which had been given to them within the two thousand cubits round about the cities (cf. Numbers 25:5) (whilst an ordinary Israelite’s field must remain at least two years in the hand of the purchaser), or if they sold “a house in a city which has a wall” they may redeem it at any time and it does not become irredeemable at the end of one year (as is the case with such houses belonging to Israelites; cf. v. 30) (Arakhin 33b).

וְעָרֵי֙ הַלְוִיִּ֔ם בָּתֵּ֖י עָרֵ֣י אֲחֻזָּתָ֑ם גְּאֻלַּ֥ת עוֹלָ֖ם תִּהְיֶ֥ה לַלְוִיִּֽם׃

But the cities of the Levites, and the houses of the cities of their possession, may the Levites redeem at any time.