Vayikra 25:30

וקם הבית...לצמתת (THEN THE HOUSE… SHALL BE ESTABLISHED ABSOLUTELY [TO HIM THAT OBTAINED IT] — i. e. it leaves the control of the vendor for ever and stands under the exclusive control of the purchaser. אשר לא חמה — We read the text as though it were written לו (i. e. tradition tells us to do so). Our Rabbis, of blessed memory, said (Arakhin 32a): We do so to intimate that the law applies to a city even if at the present it has not a rampart (אשר לא חמה) since previous to now it had one (אשר לו חמה). It is true that עיר is a feminine noun and the preposition referring to it should have been written לה (not לו), yet because Scripture was bound to write לא in the text for the reason given, the Massora (the traditional Scriptural text without vowels) replaced it by לו (instead of לה), because the sound of the one applies also to the other (they sound similar). לא יצא ביובל IT SHALL NOT GO OUT IN THE JUBILEE — Rabbi Saphra said, “if the Jubilee happened to fall during that year (the first year of its sale), it shall nevertheless not go out” (Arakhin 31b).

וְאִ֣ם לֹֽא־יִגָּאֵ֗ל עַד־מְלֹ֣את לוֹ֮ שָׁנָ֣ה תְמִימָה֒ וְ֠קָ֠ם הַבַּ֨יִת אֲשֶׁר־בָּעִ֜יר אֲשֶׁר־[ל֣וֹ] (לא) חֹמָ֗ה לַצְּמִיתֻ֛ת לַקֹּנֶ֥ה אֹת֖וֹ לְדֹרֹתָ֑יו לֹ֥א יֵצֵ֖א בַּיֹּבֵֽל׃

And if it be not redeemed within the space of a full year, then the house that is in the walled city shall become the permanent property of him that bought it throughout his generations: it shall not go out in the jubilee.