Deuteronomy 4:41

אז יבדיל — The imperfect form יבדיל instead of הבדיל is to be thus explained (cf. Rashi on Exodus 15:1): He set his attention to be zealous for the matter, — to set them apart. And although they were not to serve as cities of refuge until those of Canaan proper (the western side of the Jordan) were set apart for that purpose, Moses said, Any duty that it is possible for me to perform I will perform (Makkot 10a). בעבר הירדן מזרחה שמש ON THE SIDE OF THE JORDAN TOWARDS THE SUN-RISING — i.e. on that side which is on the east of Jordan (not the side of the Jordan that is east of Canaan proper). מזרחה שמש — Because it (the word מזרחה) is in the construct state the ר is vowelled with Chataph (vocal Sheva), the meaning being, “the rising of the sun", i.e., the place of the sun's rising.

אָ֣ז יַבְדִּ֤יל מֹשֶׁה֙ שָׁלֹ֣שׁ עָרִ֔ים בְּעֵ֖בֶר הַיַּרְדֵּ֑ן מִזְרְחָ֖ה שָֽׁמֶשׁ׃

Then Moshe set apart three cities on this side of the Yarden toward the sun rising;