Números 18:30

30 "Say to the Levites: 'When you present the best part, it will be reckoned to you as the product of the threshing floor or the winepress.

30 Therefore thou shalt say unto them, When ye heave the best thereof from it, then it shall be reckoned unto the Levites as the increase of the threshing-floor, and as the increase of the wine-press.