Reference for Bekhorot 84:28

אפי' תימא רבנן הואיל ואישתני אישתני

there is a different animal?<span class="x" onmousemove="('comment',' Its male part changing into a female. Lit., 'Since it has changed (in one direction) , it has changed also in another direction'.');">¹⁸</span>

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