Sunday, November 12, 2006

beitza 17 - eiruv from y"t to shabbos

  1. why does rashi not mention hachana in the whole sugya, rashi explains that you may not put an eiruv from y"t to shabbos because you are fixing, what happened to the gemara in eiruvin of hachana?
  2. just pointing out that there is an obvious argument betwen rashi and tosfos as to what it means that you cannot acquire shvita on y"t. acc to rahi it is probably because of fixing or something similar because rashi has to find a heter for eiruv tavshilin, but acc to tosfos it is because of acquiring a house. the obvious nafka mina is eiruv chazeros, although the gemara omits, we hold (based on the Rosh, Rif) that one may make a tnay on eiruv chazeros although one cannot on techumin, but acc to rashi this would seem to be wrong.

1 comment:

Avi Lebowitz said...

i think your point on rashi is a very good one. it sounds from rashi that to be koneh shevisa applies to eiruv tavshilin, but is permitted for kavod shabbos. it seems that he holds this violation should include any situtaion where the food assumes a status as an eiruv.
also, regarding the hachana issue, it seems clear that tosafos assumes it is only derabonon. if it would be d'oraysa then the question of why not say in eiruvin that by eiruvei chatzeiros it is assur bec. of koneh shivisa, would not even start - the gemara would prefer hachana wherever applicable since it is deoraysa. this is consistent with tosafos 2b that minimal hachana is not inlcuded in the deoraysa issur of hachana d'rabba. - r' yossi, we do much better in these type of discussions -back to real torah!