Numbers 35:1-3

And the Lord spake unto Moses,—saying— As the priests and Levites, were a distinct body from the rest of the nation, and had no share in the division of the country, God here assigns them several towns for their residence, with such a portion of ground about them as would serve for their decent subsistence. Under the name Levites are comprehended both priests and Levites, who were all of the tribe of Levi. See Joshua 21:4. Notwithstanding this provision, it was lawful for them to hire or purchase houses in any other city, particularly Jerusalem; for we find in Scripture many proofs of their dwelling in other cities besides these which are assigned to them; and in like manner, no doubt, other people, with their permission, might dwell with them in their cities. It is plain, that the suburbs of the cities were for pasturage, and for the use of their cattle. Their goods mean stables for their cattle, and stowages for their provisions of all kinds. See Bonfrere on the place.