Kollel Iyun Hadaf, Jerusalem
(a) If a woman sees a bloodstain, how far back in retrospect, is the bloodstained garment Metamei the food and drink that it touches?A Nidah is Metamei a sealed earthenware vessel through Heset.
(b) What is Heset, and why can she not be Metamei it through touching?If a woman sees a bloodstain, she has upset her calculation.
(c) What does this mean, and why is it not the case by a woman who sees blood?2) According to the Rabbanan of Rebbi Akiva, is a man who has relations with a woman who saw blood Tamei retroactively?
3) Assuming that Rava knew the above Beraisa, why did he need to learn Mishkav u'Moshav from a Kal va'Chomer, why did he not learn it from the Beraisa itself (had he not known the Beraisa, then how would he know that earthenware vessels are Tamei retroactively?)
(a) According to Rav Huna, who learns that Mei'es Le'es she'be'Nidah is only Metamei Kodesh but not Terumah, why is Mei'es Le'es not included in the Mishnah in Chomer ba'Kodesh (in Chagigah), which deals with the Chumros of Kodesh over Terumah?5) Rebbi practiced like Rebbi Eliezer, who maintains that any woman who does not see blood for three periods of thirty days, (even a young woman) we say 'Dayah Sha'atah'. After he remembered, he proclaimed 'Keday Hu Rebbi Eliezer be'Sha'as ha'Dechak'!
(a) What could he not have meant, and what *did* he mean?
(a) What did Rabban Gamliel's maidservant ask Rabbanan Gamliel, why did she not accept his initial answer, and what was his final ruling?7) In another episode, Rebbi's maidservant again asked Rebbi the same Sha'aleh about barrels of wine.
(a) Assuming that both Sha'alos concerned Hekdesh, why did she need to ask the same Sha'aleh a second time?In the second Lashon, Rav Huna does not differentiate between Hekdesh and Terumah.
(b) How does he prove this?8) If a dough in its first stages, became Safek Tamei, *before* it was kneaded, then one is permitted to knead it be'Tum'ah; but not if it became Safek Tum'ah *after* it was kneaded.
(a) Why is that?