measurements relating to the performance of different Mitzvot

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2answers
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Minimum Shi'ur for Kiddush on liquor

What is the minimum Shi'ur (volume) of a cup required for making Kiddush on liquor? Is there a smaller amount required than there is for wine? What is the minimum Shi'ur of the liquor that one is ...
7
votes
3answers
896 views

Cash value of 'perutah'

How much is a 'perutah' worth in modern currency?
13
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2answers
192 views

How big, and what exactly, is “Kedei Kelipah”?

{Kedei Kelipah is a term used in Kashruth for the amount of something that needs to be removed in order to allow one to treat the remnant as Kosher. (This only applies under certain conditions, which ...
6
votes
5answers
294 views

K'zayis as a weight measurement

The label of the one-pound box of Cohen Halperin Shmura Matza reads: משקל כל מצה כשיעור כזית In English (with some Hebrew thrown in, in transliteration, of necessity), that's: The weight of ...
5
votes
0answers
129 views

Eating out Friday night of Chanukkah

If one is lighting Chanukkah candles inside (for whatever reason) relying on the publicization to himself and his family, then what should he do on Friday night if he is eating out? Must he make the ...
2
votes
2answers
349 views

Upper limits of “kovea itim”

It is known from the gemara (Shabbos 31a and cited in maamar Toras HaBayis ch. 1, among other places) that when a person dies, he is asked if he had set times for learning. I know that these times can ...
7
votes
3answers
367 views

Is human blood treif?

OK, I know it isn't kosher, but what is the shiur? And do we hold "chetzi shiur assur min haTorah"? For an application, what if you get a cut while hiking in the woods; is it assur to clean the wound ...
4
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1answer
1k views

How long does one say Kaddish for a parent?

For example, if one's parent died on 1 Nissan, and was buried on 2 Nissan, what is the last day on which kaddish would be said for them?
3
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2answers
134 views

Machatziz hashekel

How much money is a Machatziz hashekel.
5
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1answer
160 views

What is the shiur for anointing on Yom Kippur?

Is there a minimum shiur to be chayav for anointing on Yom Kippur, and, if so, what is it? The gemarah (Yoma 76b) seems to learn it out as a comparison to food consumption: would that mean it has the ...
11
votes
3answers
580 views

Why do we say “You should live till 120”?

Prior to the Mabul people lived for hundreds of years. After the Mabul lifespans shortened although we see that the Avos lived in the 180 year range. In the Pasuk in Tehilim we say Yemei Shenoseinu ...
8
votes
1answer
676 views

18 minute Matzah?

Are there sources EXPLAINING why we have to make matzah within 18 minutes? I understand having a time limit if in fact the reason we eat matzah is to reenact the speed which we left Egypt (that ...
5
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2answers
301 views

Challah Loaves on Shabbat have a minimum size?

In this article regarding the Shabbat Challah loaves, The Shmirat Shabbat KeHilchata (vol. II 55:5) is quoted as saying: The loaves must each be at least the size of an olive Normally, the size ...
4
votes
2answers
702 views

What is the actual temperature of Yad Soledes?

What is the actual temperature of Yad Soledes?
3
votes
2answers
190 views

Figuring out a K'zayit by weight/volume of ingredients

In this question, I learned that one measures the amount of flour used to determine whether challah separation is necessary. Here I learned that there is a difference of opinion between (some) ...
3
votes
2answers
185 views

Minimally sized kiddush cup for sale

I read that a reviit (the minimal size for a cup used for kiddush, havdala etc) is 86.4 mL according to the generally accepted view (see here for options). Does anyone know where I can get a cup that ...
3
votes
3answers
95 views

Shiur of “Miut Hamatzui”

A "miut hamatzui" is a phrased used to express a case where because of a small concern that something exists, or might happened, or does happen that the halacha is affected by this. An example is if ...
16
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2answers
154 views

Hagalah in Denver?

In high-altitude cities, water boils at a lower temperature than the standard 212 degrees Farenheit. For example, in Denver the boiling point is about 203 degrees. Can one kasher utensils with hagalah ...
12
votes
1answer
123 views

Bracha after an earthquake

Per the Artscroll Siddur after an earthquake we make a Bracha "Oseh Maaseh Breishis". Up to how long after the earthquake can you make this Bracha? (sources please)
8
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1answer
94 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 ...
8
votes
1answer
63 views

Are bushes acceptable for elevations that require a maakeh, a fence?

If evergreen bushes span the entire length of a side of a porch, at about waist-height for someone on the porch, do the bushes remove the need for a railing? The difference being that a railing can be ...
7
votes
2answers
248 views

Saying 100 Berachoth in a day

What is the source for the idea that one should say 100 Berachoth in a day, and how serious of an obligation is this? Is it mandatory, is it laudatory, or is it merely a nice idea?
7
votes
1answer
160 views

What height porch requires a railing?

What are the different opinions of heights (in American or metric units) that requires a railing for the side of a porch?
6
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2answers
227 views

How many T'fachim make up an Ama?

Is it possible to convert between Torah measurements? Specifically, T'fachim & Amot, (cubits) so I can figure out the size of the luchot (tablets) within the Aron Hakodesh (ark). (The Luchot are ...
5
votes
0answers
193 views

How obligated is one to say Kaddish for a deceased relative?

People often talk about an obligation -- Chiyuv -- to recite Kaddish at every opportunity for some time after the death of a relative. (Which relatives are obligated and for how long does not seem ...
5
votes
2answers
142 views

What is a source that allows one to treat one's house as all within four amos?

I am after a source that allows one to treat one's house as all within four amos l'chatchila, with respect to nagel vasser (hand washing in the morning).
5
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0answers
65 views

Sukkah decoration parameters [duplicate]

Possible Duplicate: Can too many decorations render a sukkah invalid? What are all the rules concerning decorations that are hung overhead in a sukkah? In other words, within what ...
5
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2answers
131 views

Why is the right strap longer than the left strap by the Tefilin Shel Rosh?

What is the reason that the right strap is longer than the left strap by the Tefilin Shel Rosh?
4
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2answers
127 views

Measurements used in Halacha

What is the underlying argument between the Chazon Ish and Rabbi Chaim Naaeh and Reb Moshe Feinstein? I know they argue in amounts, but what is the underlying argument? How did each get the ...
4
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0answers
147 views

Using Liquor for Kiddush [duplicate]

Possible Duplicate: Minimum Shi'ur for Kiddush on liquor Are you allowed to use other alcohols outside of wine for kiddush and how much must be used? really what i don't understand is ...
3
votes
2answers
77 views

Kaddish yatom: what if a parent really *is* wicked?

I understand that a soul may be judged for a full 12 months after death but that we (generally) only say kaddish yatom for a parent for 11 months because the longest period is for the worst sinners ...
3
votes
3answers
252 views

Is there a time limit for Borei Nefashos and Beracha Me'en Shalosh?

It seems that there's a 72-minute period after eating in which one must bentch. Does this also apply for Borei Nefashos and Beracha Me'en Shalosh?
2
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2answers
117 views

Shalom alecha rebbi (u'mori)

What is the significance of the time it takes to say Shalom Alecha Rebbi (U'mori)?
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41 views

Minimum amount required to drink when making Kiddush on Liquor [duplicate]

Possible Duplicate: Minimum Shi'ur for Kiddush on liquor What is the minimum Shi'ur that one is required to consume when making Kiddush on liquor?