It is stated in Insights 2) (c) "The Rosh writes that the Isur of Bal T'aacher is always transgressed only after three Regalim." Is there a Torah reference to this or is it "Torah l'Moshe MiSinai?" Thank you and may the Bais HaMikdash speedily be built.
Yitzchak Coffer, Thornhill, Canada
[The following is taken from Review Answers to Rosh Hashanah 4b:]
(a) The source for the opinion of ...
1. ... the Tana Kama, according to whom 'Bal Te'acher' applies after three
Yamim-Tovim - is the fact that, after having discussed the Shalosh Regalim in
Re'ei, the Torah inserts the phrase "be'Chag ha'Matzos, u've'Chag ha'Shavu'os
u've'Chag ha'Sukos", a phrase which seems to be superfluous. It must
therefore be coming to tell us that after (any) three Yamim-Tovim, one
transgresses Bal Te'acher.
2. ... Rebbi Shimon, who learns that it applies only after three Yamim-Tovim
in their right order - because otherwise (even according to the Tana Kama,
he maintains), why does the Torah mention Chag Sukos, which it has just
(b) Rebbi Meir learns that it applies after one Yom-Tov from "u'Vasa Shamah
va'Heveisem Shamah". According to the Rabbanan - that Pasuk comes to teach us
that after one Yom-Tov, one transgresses an Asei for not bringing his
Korban by the end of the first Yom-Tov.
(c) Rebbi Meir says that if there is already an Asei to bring it by then,
then it stands to reason that the La'av of Bal Te'acher will automatically
apply for someone who fails to bring it by then.