Reference for Chullin 247:47

רבי עקיבא אומר

IF THERE WERE TWO PIECES OF FLESH EACH A HALF-OLIVES BULK UPON IT, THEY CONVEY UNCLEANNESS BY CARRYING<span class="x" onmousemove="('comment',' For when a person carries the hide he carries at the same time an olive's bulk of the carcass.');"><sup>23</sup></span>