Reference for Sotah 60:2

ותניא כביצה

may be] equal to the size of an egg. — [Now the schoolmen] held that both [these teachings]<span class="x" onmousemove="('comment',' [The one that holds that the quantity should be less than the size of an egg as well as the other, that it may be the size of an egg.] ');">²</span>

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