Numbers 15:2, 18-21

Speak unto the children of Israel, and say unto them, When ye are come into the land of your habitations, which I give unto you

Speak unto the children of Israel, and say unto them, When ye come into the land whither I bring you, then it shall be, that, when ye eat of the bread of the land, ye shall offer up a heave-offering unto Jehovah. Of the first of your dough ye shall offer up a cake for a heave-offering: as the heave-offering of the threshing-floor, so shall ye heave it. Of the first of your dough ye shall give unto Jehovah a heave-offering throughout your generations.