Reference for Niddah 41:38

של ארבעת מיני דמים דברי הכל טמאה הא קתני אדומה ושחורה ופליגי רבנן

was it any longer necessary to state that the same law applies also to green and white?<span class="x" onmousemove="('comment',' Which are not of the four unclean kinds. ');">²⁹</span>

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