Reference for Bekhorot 66:14

יקיז ובלבד שלא יעשה בו מום ואם עשה בו מום הרי זה לא ישחט עליו

AND IF HE MADE A BLEMISH, HE MUST NOT SLAUGHTER IT ON ACCOUNT OF THIS.<span class="x" onmousemove="('comment',' Since he was responsible for the blemish, but must wait for another blemish to appear.');">¹¹</span>

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