Reference for Chullin 185:11

אמר רבי אבא אמר רב יהודה אמר שמואל

R'Abba further said in the name of Rab Judah who said it in the name of Samuel: The fat which is upon the innominate bone<span class="x" onmousemove="('comment',' I.e., the hip-bone. According to Rashi the text refers to the sacrum. V. Katzenelsohn, p. 269, n. 2.');">⁵</span>

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