Reference for Bekhorot 50:8

לא בזה התיר עקביא וחכמים אוסרין

IS PERMITTED, WHEREAS THAT WHICH DOES NOT APPEAR [ON A LEVEL] WITH [THE REST OF] THE WOOL<span class="x" onmousemove="('comment',' Where it is separated from the remainder of the wool in a marked degree. It is therefore considered as if it became detached while the animal was alive.');">⁶</span>

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