Reference for Keritot 42:23

כלאים דמאי

and secondly the Tanna expressly excludes it even from a prohibition, as we have learnt: I must exclude the blood of reptiles for they are not subject to weighty uncleanness!<span class="x" onmousemove="('comment',' I.e., the blood of reptiles is excluded from the text that contains the prohibition of blood, viz., Lev. VII, 23.');">¹⁵</span>

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