Reference for Chullin 70:36

לא הא דם חללים מכשיר

for I might have argued: What is the difference whether a human being or the angel of death slays it?<span class="x" onmousemove="('comment',' And if R. Simeon holds that the blood of an animal killed by a man will render foodstuffs susceptible to uncleanness then he would surely hold the same with the blood of an animal that died a natural death, in other words, slain by the angel of death.');">¹⁴</span>

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