ט ר' שמעון בן אלעזר אומר דברים שהנפש קצה בהן יחזיר להן את הדמים ושאין הנפש קצה בהם ינכה להם את הדמים ואלו הן דברים שהנפש קצה בהן נבילות וטריפות שקצים ורמשים ואלו הן דברים שאין הנפש קצה בהן בכורות טבלים ויין נסך
9 AND LIKEWISE IF ONE SLAUGHTERED A COW AND SOLD IT AND IT BECAME KNOWN THAT IT WAS TREFAH, AS REGARDS WHAT [THE PURCHASERS] HAVE EATEN THERE IS NO REMEDY, AND AS REGARDS WHAT THEY HAVE NOT EATEN, THEY RETURN THE FLESH TO HIM AND HE MUST RETURN THE MONEY TO THEM. IF [THE PURCHASERS] [IN THEIR TURN] SOLD IT TO HEATHENS OR CAST IT TO DOGS, THEY MUST PAY HIM THE PRICE OF TREFAH.<span class="x" onmousemove="('comment',' Since they did not eat the trefah, they must pay him the cheap price of trefah and he compensates them for the rest, as they paid the higher price for kosher flesh.');"><sup>13</sup></span> <big><b>GEMARA: </b></big>Our Rabbis taught: If one sells flesh to another which turned out to be flesh of a firstling, or if one sells produce and it turns out to be untithed or if one sells wine and it turns out to be forbidden wine,<span class="x" onmousemove="('comment',' Wine of idolatrous libation.');"><sup>14</sup></span> what [the purchasers] have eaten cannot be remedied and he must return the money to them. R'Simeon B'Eleazar, however, says: In the case of objects for which a man has a loathing, he must return the money to them, [as there was no benefit to them after knowing], whereas in the case of objects for which a man has not a loathing, he deducts from the price [what had been eaten]. And the following are the objects for which a person has a loathing: Carcases, trefahs, forbidden animals and reptiles.