Reference for Niddah 42:43

המפלת חתיכה קורעה אם יש בה דם אגור טמאה ואם לאו טהורה

Now does not the first Tanna also declare her clean?<span class="x" onmousemove="('comment',' Cf. prev. n. What then is the difference between their respective views? ');">³⁶</span>

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