Numbers 18:30-32

30“Also, give these instructions to the Levites: When you present the best part as your offering, it will be considered as though it came from your own threshing floor or winepress.

31You Levites and your families may eat this food anywhere you wish, for it is your compensation for serving in the Tabernacle.

32You will not be considered guilty for accepting the Lord’s tithes if you give the best portion to the priests. But be careful not to treat the holy gifts of the people of Israel as though they were common. If you do, you will die.”