Reference for Chullin 73:4

עד שתפרכס ביד וברגל ר"א אומר

<big><b>MISHNAH: </b></big>IF A MAN SLAUGHTERED A DYING ANIMAL,<span class="x" onmousemove="('comment',' I.e., an animal which is dangerously sick. It is feared that the animal might have died before the slaughtering was completed, hence it is necessary to ascertain, by means of the tests of vitality suggested, that the animal was still alive up to the end of the slaughtering.');">²</span>

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