Numbers 18:28-30

Young's Literal Translation

²⁸ so ye do lift up -- ye also -- the heave-offering of Jehovah from all your tithes which ye receive from the sons of Israel; and ye have given from it the heave-offering of Jehovah to Aaron the priest;

²⁹ out of all your gifts ye do lift up the whole heave-offering of Jehovah; out of all its fat, -- its hallowed part -- out of it.

³⁰ `And thou hast said unto them, In your lifting up its fat out of it, then it hath been reckoned to the Levites, as increase of a threshing-floor, and as increase of a wine-vat;