Reference for Chullin 64:1

נקובת הוושט ופסוקת הגרגרת

If the gullet was pierced, or the windpipe severed!<span class="x" onmousemove="('comment',' This is the opening Mishnah of Chap. III, infra 42a. It is there stated that if the windpipe was severed the animal is merely trefah, whereas in our Mishnah, if the slaughterer tore away (i.e., severed) the windpipe, the animal is stated to be nebelah by R. Jeshebab, and R. Akiba ultimately also concurred.');">¹</span>

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