Ezekiel 44:30-31

30And the first of all the first-fruits of every [kind], and every heave-offering of every [kind], of all your heave-offerings, shall be for the priests; ye shall also give unto the priest the first of your dough, that he may cause the blessing to rest on thy house. 31The priests shall not eat of anything that dieth of itself, or of that which is torn, whether of fowl or of beast.