Reference for Chullin 16:7

השוחט בסכין של עובדי כוכבים רב אמר

He must pare (the flesh];<span class="x" onmousemove="('comment',' I.e., he must cut away from the parts of the throat which came into contact with this knife a thin layer of flesh because of the fat of forbidden foods that was absorbed in the knife and was now transmitted to the flesh.');">⁴</span>

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