Reference for Menachot 30:3

ואיכא דמתני לה אכבשים בעא מיניה רבי אלעזר מרב השוחט את הכבשים לאכול כזית מהן ומלחמן מהו

does not itself become forbidden, what may have made the other forbidden but did not do so<span class="x" onmousemove="('comment',' Sc. the seeds, on account of which the vines would have been forbidden were it not for the reason stated infra in the GEMARA:');">³</span> surely does not itself become forbidden!<span class="x" onmousemove="('comment',' Nevertheless the seeds are forbidden and such an a fortiori argument is not applied.');">⁴</span>

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