For their cattle; for pasturage for their cattle; where they might not build houses, nor plant gardens, orchards, or vineyards, no, nor sow corn, for which they were abundantly provided out of the first-fruits and tithes. And these suburbs did not belong to the Levites in common, but were distributed to them in convenient proportions, as may appear from Joshua 21:18 1 Chronicles 6:60.
Related Commentaries of Numbers 35:3
Numbers 35:3
3 And the cities shall they have to dwell in; and the suburbs of them shall be for their cattle, and for their goods, and for all their beasts.