But if the slayer shall at any time come without the border of the city of his refuge,.... Which seems to be the three thousand cubits assigned to every city of the Levites, and so to the cities of refuge; and which, according to the Jewish writers, were a refuge, as the city itself; and it is said ,"he, that kills a man there, is killed for him, but though the border is a refuge, the slayer does not dwell in it, as it is said.
Nu 35:25, "he shall abide in it", but not in its borders:''whither he was fled; on account of manslaughter. Maimon. Hilchot Rotzeach, c. 8. sect. 11. Misn. Maccot, c. 2. sect.