Reference for Chullin 26:40

<big><strong>מתני׳</strong></big> השוחט בלילה וכן הסומא ששחט שחיטתו כשרה:

<big><b>GEMARA: </b></big>The expression 'IF ONE SLAUGHTERED' implies that the slaughtering is valid only after the act but it does not imply a right in the first instance.<span class="x" onmousemove="('comment',' And the reason is because it is to be feared that the slaughterer will not be able to ascertain whether he has sufficiently cut through the organs of the throat.');">¹³</span>

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