Reference for Bekhorot 80:36

שתי ביציו אחת גדולה כשתים שבחבירתה

SPLIT OR ONE EYE IS [ABNORMALLY] LARGE AND THE OTHER SMALL, OR ONE EAR [ABNORMALLY] LARGE AND THE OTHER SMALL, BEING VISIBLY SO AND NOT MERELY IN ACTUAL MEASUREMENT.<span class="x" onmousemove="('comment',' For if it is not recognized by sight as a deformity but is only found to be so by measurement, then it is not a disqualifying blemish, since a disqualifying blemish must be visible and noticeable.');">¹⁷</span>

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