Reference for Chullin 192:4

ההיא אכילה דכי אית ביה ארבעה וחמשה זיתים ואכל חד כזית מיחייב

Which is upon the spoon of the thigh'.<span class="x" onmousemove="('comment',' I.e., for eating the portion which is upon the spoon of the thigh, even though it is not the whole, one is liable, provided always it consisted of an olive's bulk.');">³</span>

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