6
votes
2answers
65 views

I thought Gezeirah Shavah requires Mesorah

In Masecheth Rosh Hashanah (9b), the Gemara uses a Gezeirah Shavah from Tishrei, with the word שנה, to support the Mishnah's ruling that 'Orlah is counted from Tishrei. In response, however, the ...
3
votes
1answer
106 views

What is the source of Chazaka?

There are many halachic chazakas. Most of them are halachic assumptions, such as: Keeping things the way they always were - Either financial (Chezkas Marei Kama) or religious (Chezkas Tahara, ...
3
votes
1answer
71 views

Pesik Resheih DeLa'Avar (inevitable consequence relating to the past)

The RaM"a (Y"D 87:6) cites an opinion that one may shouldn't stoke a flame beneath a non-Jew's pot, for fear that there's some milk and meat residue in it, and you might come to cook said milk and ...
5
votes
3answers
429 views

Source for the prohibition against Nivul Peh (foul mouth)

What is the source for the prohibition against Nivul Peh (using foul language)? Is it Biblical? Rabbinic? "Asmachta" (based on a principle derived from the Torah but ultimately not considered a ...
5
votes
1answer
106 views

Is the Mitzva of Tzitzit on the Gevra or the Cheftza?

Is the Mitzva of Tzitzit an obligation on the clothing or on the person?