Les Nombres 35:14 Références de la Michna : Mishnah Makkot

To where are they banished? To the cities of refuge, to the three cities situated on the far side of the Jordan and the three cities situated in Canaan, as it says, “Three cities shall be designated beyond the Jordan, and the other three shall be designated in the land of Canaan” (Numbers 35:14). Not until three cities were selected in the land of Israel did the [first] three cities beyond the jordan receive fugitives, as it says, “Six cities of refuge in all” (Numbers 35:13), until all six could simultaneously receive fugitives.