Reference for Chullin 62:49

מדגלי רחמנא מתעסק בקדשים פסול מכלל דחולין לא בעינן כוונה

Raba said: If a person while slaughtering the Red Cow, slaughtered at the same time another animal, according to all views the Red Cow is invalid.<span class="x" onmousemove="('comment',' V. supra p. 155: 'If they do any other work at the same time, they render it invalid.'');">²³</span>

Jastrow

Jastrow

Jastrow

Jastrow