Numbers 20:16

20:16 So when we cried to the Lord, he heard our voice and sent a messenger, and has brought us up out of Egypt. Now we are here in Kadesh, a town on the edge of your country.

Numbers 35:27-28

35:27 and the avenger of blood finds him outside the borders of the town of refuge, and the avenger of blood kills the slayer, he will not be guilty of blood, 35:28 because the slayer should have stayed in his town of refuge until the death of the high priest. But after the death of the high priest, the slayer may return to the land of his possessions.

Numbers 35:32

35:32 And you must not accept a ransom for anyone who has fled to a town of refuge, to allow him to return home and live on his own land before the death of the high priest.