Commentary for Chullin 40:19
אמר רב חסדא אף אנן נמי תנינא
Why? - R'Huna says: Because he thrusts [whilst cutting the organs].<span class="x" onmousemove="('comment',' For 'thrusting' v. supra p. 37, n. 9. Here the cervical vertebrae close up and cover the knife as soon as it has cut through the neckbone, and there is therefore a 'thrusting'. According to R. Gershom and Tosaf. it is invalid because he is cutting the neck from back to front.');"><sup>12</sup></span>
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