Josh 21:27

וְלִבְנֵ֣י גֵרְשׁוֹן֮ מִמִּשְׁפְּחֹ֣ת הַלְוִיִּם֒ מֵחֲצִ֞י מַטֵּ֣ה מְנַשֶּׁ֗ה אֶת־עִיר֙ מִקְלַ֣ט הָרֹצֵ֔חַ אֶת־גלון גּוֹלָ֤ן בַּבָּשָׁן֙ וְאֶת־מִגְרָשֶׁ֔הָ וְאֶֽת־בְּעֶשְׁתְּרָ֖ה וְאֶת־מִגְרָשֶׁ֑הָ עָרִ֖ים שְׁתָּֽיִם׃ ס

This is what the Levite clans of the Gershonites were given: From the half-tribe of Manasseh they were given Golan in Bashan, a city of refuge for the manslayer, and Beeshterah—two cities, together with their pasturelands.