Reference for Chullin 192:2

אכילה כתיבה ביה

And the Rabbis? - The term 'eating' is to teach that if it [the sciatic nerve] consisted of four or five olives' bulk and he ate thereof the size of one olive, he is liable.<span class="x" onmousemove="('comment',' For it might have been thought that only the eating of the whole of it renders one liable to stripes.');">²</span>

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