Numbers 35:4

²Give orders to the children of Israel, and they shall give to the Levites cities to dwell in from the lot of their possession, and they shall give to the Levites the suburbs of the cities round about them.

³And the cities shall be for them to dwell in, and their enclosures shall be for their cattle and all their beasts.

— Numbers 35:4 —

⁵And thou shalt measure outside the city on the east side two thousand cubits, and on the south side two thousand cubits, and on the west side two thousand cubits, and on the north side two thousand cubits; and your city shall be in the midst of this, and the suburbs of the cities as described.

⁶And ye shall give the cities to the Levites, the six cities of refuge which ye shall give for the slayer to flee thither, and in addition to these, forty-two cities.