Reference for Bekhorot 85:16

גרב גרב ילפת ילפת לגזירה שוה

, [mentioned above as blemishes in regard to a firstling], are not mentioned in the Law in connection with the blemishes of an animal?<span class="x" onmousemove="('comment',' But are mentioned only among the blemishes of a human being. For, as regards some of the blemishes mentioned in the above Mishnahs, these are derived from the text 'ill blemish'. But with reference to dak and teballul, one might object that since the law laid them down explicitly in connection with a human being and not in connection with the blemishes of an animal, then one can conclude that they do not apply to animals.');">¹⁰</span>

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