Commentary for Eruvin 56:5
והלכתא כינוקא דבי רב מ"ט האי גמר פירי והאי לאו גמר פירי ומאי דקאמרת האי מארעא קא רבי והאי מאוירא קא רבי לא היא כשות נמי מארעא קא רבי דהא קא חזינן דקטלינן לה להיזמתא ומייתא כשותא
Cuscuta also derives its nourishm from the earth; for we may observe that when the shrub<span class="x" onmousemove="('comment',' On which the cuscuta grows as a parasite.');"><sup>5</sup></span> is cut off the cuscuta dies.<span class="x" onmousemove="('comment',' Which proves that its nourishment is ultimately derived from the earth.');"><sup>6</sup></span> But is it not permissible to prepare an 'erub from unripe dates?
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