Les Nombres 35:10 Halakha : Mishneh Torah, Foreign Worship and Customs

דַּבֵּר֙ אֶל־בְּנֵ֣י יִשְׂרָאֵ֔ל וְאָמַרְתָּ֖ אֲלֵהֶ֑ם כִּ֥י אַתֶּ֛ם עֹבְרִ֥ים אֶת־הַיַּרְדֵּ֖ן אַ֥רְצָה כְּנָֽעַן׃

"Parle aux enfants d’Israël, et dis-leur: Comme vous allez passer le Jourdain pour gagner le pays de Canaan,

Mishneh Torah, Foreign Worship and Customs of the Nations

None of the cities of escape is adjudged a seduced city, as it is said: "Within any of thy gates" (Deut. 17.2); nor is Jerusalem adjudged a seduced city as it was not divided among the tribes. A buffer city must not be adjudged a seduced city, lest the idolaters enter through it and destroy Eretz Ysrael. A single tribunal should not adjudge three cities, one alongside the other, seduced cities, but if they be far apart it may be done.6Sifre, Deut. 17; Sanhedrin, 2a; Ibid. 16a-b; Baba Kamma, 72a C.G.