Reference for Shabbat 284:2

דרבי יהודה עדיפא מדר"ש בן אלעזר:

R. Simeon b. Eleazar said: One casts his eyes at one side and eats from the other?<span class="x" onmousemove="('comment',' Thus R. Judah insists on actual removal. ');">²</span>

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