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8
votes
4answers
644 views

tap water on Pesach

The New Croton Reservoir supplies much of New York City's tap water, and people are allowed to — and do — go out on boats and fish. I'd venture a guess that almost every Saturday and Sunday, a piece ...
4
votes
1answer
443 views

If chametz is batel before Pesach

If chametz can be batel before Pesach, why don't we buy (before Pesach) any commercially produced product with year-round (i.e., not Pesach-specific) kosher certification which does not list chametz ...
11
votes
1answer
265 views

Nullifying Ancient Israelite Idols

Following up on a question raised on the Avodah list (see here & here under the subject “Destroying Idols”). Archaeologists often dig up idols whose worshipers have abandoned them over the ...
5
votes
3answers
257 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 ...
8
votes
1answer
332 views

Bitul BeRov - the classic case in real life

In Halachah there's a tremendously powerful concept of Bitul BeRov (nullification among the majority). It goes like this: If you have three identical pieces of meat, and you know for a fact that one ...
9
votes
1answer
113 views

Can non-Jews utilize the princple of bittul berov?

The concept of bittul berov means that in certain cases, if some non-kosher food gets mixed up in as much kosher food of the same type such that nobody knows which piece is the non-kosher part, the ...
8
votes
1answer
115 views

What's the Shiur of Mashehu?

Certain issurim (forbidden things) can become batel (halachically nullified) if they were unintentionally mixed in heter (permitted things). In order for this to happen, the heter must outnumber the ...
6
votes
3answers
136 views

Why seem to sell and be mafkir chametz?

My understanding is that we do both of the following: We (appoint a rabbi as an agent to) sell our chametz to a gentile. This sale takes place the morning of the day before Pesach, before the ...
2
votes
3answers
187 views

One-in-Sixty Versus Roiv- Why both?

There are two concepts in the Halacha of Bittul (nullification). One says that if there is an item that is Unkosher that falls into another item that is Kosher, and it is a mixture, and the Unkosher ...