Reference for Chullin 246:12

אין כדאבוה דשמואל

For Samuel's father stated: A trefah animal that was slaughtered renders holy things unclean.<span class="x" onmousemove="('comment',' So according to Maim. Yad, Aboth Ha-tumah, II, 8. Rashi interprets: A consecrated animal which was slaughtered and found to be trefah renders unclean, v. supra 73a.');">⁸</span>

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