Reference for Chullin 140:4

<big><strong>גמ׳</strong></big> מאי טעמא דתנא קמא

We find that this is so of clean animals; whence do we know it of unclean animals? - From the verse: And if any beast die,<span class="x" onmousemove="('comment',' Lev. XI, 39.');">³</span>

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