Reference for Bekhorot 58:19

רבי אליעזר אומר

If this be so, then in the case of a male also he might cut away the male genital<span class="x" onmousemove="('comment',' And make the part look like a female organ and when questioned about the cut in the organ, he may ascribe it to the work of mice.');">⁹</span>

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