More Discussions for this daf
1. Emes v'Yatziv d'Oraisa 2. Ba'al Keri and reciting Torah 3. Berachos mid'Oraisa
4. Difficult Kal v'Chomer 5. Tevillah for Ba'alas Keri 6. Interrupting in Middle of Tefilah
7. Davening long 8. Rebbi Yochanan 9. Rebbi Yochanan's Kal va'Chomer
10. Correction to Point by Point 11. Emes at the end of Keri'as Shema 12. Praying twice, twice
13. Using a Verse for Multiple Purposes 14. Anusas Aviv 15. Bending when the Tzibur gets to Modim
16. Tefilah on Shabbos 17. Tefilas Nedavah 18. Semuchim
19. Malchus 20. Shemoni Esrei with Tzibur 21. shema or emes viyatziv being derabanan or deoraysa

Reuven Kasierer asked:

when the gmora says r yehudahs learning of an anusa, why does the gmora automatically assume that knaf doesnt include an anusa and must not mean that?

also why in the ond does r yehudah learn one smuchim from r yehoshua over the other? does he hold that you can only learn one thing from smuchim or what?

Reuven Kasierer, silver spring MD

The Kollel replies:

The Chachamim learn that since all Arayos are dependent on "She'ar" (family relationship), without the Hekesh we would not know that "Anusas Aviv" is Asur (since there is no family relationship). The Chachamim explain "Kenaf" to mean "Shomeres Yavam Shel Aviv."

A Hekesh is not like a Gezeirah Shavah, and we need not learn everything one from another.

D. Zupnik