Reference for Chullin 206:12

חייב וריש לקיש אמר

R'Eleazar however said: Even if he divided it outside he is also liable, because the fact that it is not consumed in one whole does not render it an incomplete act.<span class="x" onmousemove="('comment',' Lit., 'what is lacking as regards being brought together is not lacking as to the act'. I.e., the fact that the olive's bulk was put into the mouth in parts, one following the other, does not exempt the person from liability, for after all he has eaten a complete olive's bulk.');">⁶</span>

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