Reference for Niddah 98:6

אם רמץ מעמידה בידוע שמוציא משקה ואם לאו בידוע שכונס משקה

but it is put upon embers. If the embers stop it, it is certain that it only lets liquids out, but if not, it is certain that it also lets liquids in. If it drips drop after drop<span class="x" onmousemove="('comment',' This is another test, independent of the former. ');">⁶</span>

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