Reference for Chullin 200:8

בסיני נאמר אלא שנכתב במקומו:

<big><b>GEMARA: </b></big>Is R'Judah of the opinion that a prohibition can be superimposed upon an existing prohibition?<span class="x" onmousemove="('comment',' For R. Judah states in the Mishnah that it applies EVEN TO UNCLEAN ANIMALS, by which he no doubt meant to imply that he who eats the nerve of an unclean animal incurs guilt on two counts, viz., for eating the sciatic nerve and for eating of an unclean animal.');">⁷</span>

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