Reference for Chullin 70:45

אבל דם שחיטה מאי לא מכשיר

Because it i written: And drink the blood of the slain.<span class="x" onmousemove="('comment',' Num. XXIII, 24. The use of the verb, 'drink', in connection with blood signifies that it is regarded like other liquids and therefore will render foodstuffs susceptible to uncleanness.');">¹⁶</span>

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