Reference for Chullin 271:45

אמר קרא (דברים יח, ד) וראשית גז צאנך תתן לו אין לך בו אלא מראשיתו ואילך

Again just as terumah is subject to the penalty of death<span class="x" onmousemove="('comment',' If a non-priest deliberately ate terumah, he is liable to the penalty of death at the hands of Heaven; v. Sanh. 83a.');">³²</span>

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