Questions about theoretical issues about psak and general halacha concepts

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4
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2answers
119 views

What is the logical explanation for קם ליה בדרבה מיניה?

HodofHod: "In essence, the idea is this: If a person does one act, and with that one act incurs two different kinds of penalties, we only apply the stricter one. So if a person (for example) borrows a ...
4
votes
3answers
141 views

The concept of קם ליה בדרבה מיניה

I'm trying to understand this concept. I've Googled around and could't find any straightforward answers. I don't need too many details, just the explanation that's given in the Gemara (I understand ...
3
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0answers
30 views

Tosefta vs. Toras Cohanim

This past Shabbos someone said over to me a particular sugia they were learning in Taharas and a maklokes Rishonim (an argument between Rishonim, medieval rabbis) in a particular analysis. One Rishon ...
3
votes
2answers
178 views

How can we just make our chametz ownerless?

I'm trying to understand the "legal fiction" wherein we declare any chometz we have as ownerless like the dust of the earth. Is this halachically acceptable? How can a person declare something in his ...
2
votes
1answer
34 views

What do we do with Chazaka's that don't seem to hold?

Inspired by this comment, there are Chazaka's (presumptions) and principles of נאמנות (trustworthiness) in Halacha that no longer hold in our practical experience. One example is עד אחד נאמנן ...
2
votes
1answer
78 views

Can a Rishon argue on a Gaon?

On one hand, I've seen a rule from the Acharonim (I've also seen it in a Shach on Choshen Mishpat also but I can't remember where) that whatever the Gaonim say is "Divrei Kabalah" from the time of the ...
2
votes
1answer
115 views

What is the source for “the custom of our forefathers is in our hands”?

Where does "minhag avoseinu byadeinu" as a halachik concept, which is commonly cited as the source for keeping two days of yom tov outside of Israel, originate from?
1
vote
2answers
216 views

How can we use grape juice instead of wine?

There are many rituals for which we use wine. I would think that wine means a fermented grape product, or at least a fermented fruit product. On what basis do so many people use grape juice instead of ...
0
votes
2answers
112 views

Keeping up with “local” standards of dress - of religious Jews, or of society at large

In dealing with issues relating to Tzeni'uth (modesty), a lot depends on "local" standards of dress. For example, the RaMBa"M (here) explains that in places where women do not normally go out with ...