Reference for Chullin 272:9

אף ראשית הגז ממין על שאינו מינו לא

But if so, in the last clause which reads: IF HE SOLD THE WOOL OF THE MALES BUT NOT OF THE FEMALES EACH MUST GIVE THE FIRST OF THE FLEECE FOR HIMSELF, is the reason also because they are two different kinds?<span class="x" onmousemove="('comment',' It would be absurd to regard the males and females of sheep as different kinds.');">⁵</span>

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