Reference for Niddah 42:23

אפילו בתוכה

R. Johanan citing R. Simeon b. Yohai ruled: If a woman aborted a shapeless object it must be split, and if it contained a quantity of accumulated blood she is unclean, otherwise<span class="x" onmousemove="('comment',' Sc. if the blood is not accumulated in a considerable quantity. ');">¹⁹</span>

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