Reference for Niddah 118:4

ר' יוסי אומר

IN THE SAME BOWL AND BLOOD WAS FOUND ON THE WATER, R. JOSE<span class="x" onmousemove="('comment',' Who regards the blood as clean even where, as in the first clause, only one doubt is involved, viz., whether the blood originated in the menstrual source or in a wound in the bladder. ');">³</span>

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