measurements relating to the performance of different Mitzvot

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May one eat dairy immediately after tasting a meat item? [duplicate]

I know that there are different customs regarding how long one must wait to eat dairy after eating meat. Let's say one tastes a meat stew or soup to see if it needs more spicing, and this amount is ...
2
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0answers
100 views

Length of skirt

If I understand correctly there are two reasons that women wear skirts, 1) to cover the shok 2) to solve the issue of pisuk raglayim. To solve the "shok" cocern I understand that the skirt should ...
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1answer
46 views

Is there a minimum amount of urine that is considered “Going to the bathroom” for the purpose of making a blessing?

After eating food or drinking beverage, we say a blessing; however, this is only the case if some minimum amount of food or beverage has been consumed. Likewise, after going to the bathroom, we say a ...
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6answers
302 views

Is there a minimum size that a Tallis Kattan has to be?

Is there a minimum size that a Tallis Kattan has to be in order to be Yotzei the Mitzva of Tzitzis according to all Poskim? If there is a minimum size, what is it?
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2answers
32 views

the regulatory size of a garment in way to be subject to tsitsit [duplicate]

Is there a minimal size of a garment with four corners that makes it duty to tsitsit? Is there a one size fits all?
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1answer
48 views

How does one measure the size of a tallit kattan?

A Judaica store emailed me, yesterday, that they are having a 2 for 1 sale on online purchases. I don't recall my tallit kattan size, and I don't understand the sizing numbers on the online site. I ...
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1answer
35 views

Taking three steps with limited space

The Shulchan Arukh describes the measurement of the three steps back taken after amidah in OC 122:3 (translation my own): וְשִׁעוּר פְּסִיעוֹת אֵלּוּ, לְכָל הַפָּחוֹת, הוּא כְּדֵי שֶׁיִּתֵּן ...
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1answer
90 views

The angle of heseiba and derech cheirus

Heseiba (reclining) is a Rabbinic ordinance of the Passover seder intended to invoke the style of derech cherut ("the way of freedom" - associated with luxury/aristocracy). Some Rishonim (medieval ...
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0answers
23 views

Halachic definition of “full” (sated)

I was reading this: After the fact (if one ate between 8 Kezayitim and a definite meal), if one is not full make Al HaMichya and if one is full make Birkat HaMazon, yet, in such a case it’s ...
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6answers
4k views

Is a rare steak kosher?

If you have a steak medium to rare, such that it's still pink in the middle, is it kosher? At what point is meat cooked enough?
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2answers
114 views

What to do with kiddush cups that are too small?

If one comes to own a kiddush cup that is well under a reviis, is there a way the cup can be used for a mitzvah and not be left in a closet forever? What can be done with a kiddush cup that is too ...
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2answers
2k 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 ...
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1answer
63 views

Matza eating time limit

Why is there approximately a 4 minute time constrain in which we have to eat the Matzo on the night of the Seder? In other words what is the Halachic and spiritual reasoning behind why we must eat it ...
2
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1answer
97 views

Difference Between Brit and Medical Circumcision

I have recently encountered a number of non-Jews who were protesting circumcision in front of the U.S. White House. While I found most of their notions somewhat absurd, I was given pause to question ...
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0answers
47 views

What is the minimum shiur for Shulchan Orekh?

It has been mentioned that abbreviating shulchan orekh at the seder can be a practical way of keeping the seder from going too late. I have also heard rabbis--when asked for leniencies in the amount ...
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1answer
40 views

What is Gerah and how much is it?

I would like to know what Gerah(גרה) is. Omer and Cubit are related to human body. What about Gerah? How much is Gerah in modern measurements?
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1answer
44 views

How much chessed should one be doing?

Chesed, kindness, is a mitzvah in Judaism. Say people are coming to you all day asking for favors, should one make an effort to do every favor that is asked or is there a sane limit to how much ...
3
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0answers
50 views

Meaning of “emunah shlaima”?

The Rambam's 13 Articles of Faith begin with the statement: "אני מאמין באמונה שלמה" - "I believe with complete faith...", words that then go on to express our faith that God "creates and guides" all ...
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1answer
62 views

3 tefachim minimum height for candles on Chanukah - from the flame itself, or base of the chanukiyah?

For Chanukha Shulchan Aruch (תרעא:ו) writes: ...מניחו למעלה משלשה טפחים To which the Mishneh Berura writes: דכל למטה משלשה כאלו הניח בקרקע ואין ניכר שבעל הבית הניחו שם "For anything ...
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2answers
88 views

Is there a halachic time limit for sending an organization its charity box money?

Many Jewish organizations distribute tzedaka (charity) boxes. A few that I know tell people, "collect the money and at some point, empty the money and mail us a check." Let's say someone leaves this ...
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1answer
148 views

(Tefach) Wide Gartel

Some use a very wide gartel. A friend of mine mentioned an inyan (Judaism-sourced idea) that the gartel should be wider than one tefach. Can someone source this inyan that the gartel should be (more ...
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1answer
88 views

What is considered the “correct speed” for a Shabbat morning service?

I've had a few discussions with various co-congregants about "fast" and "slow" minyanim. Our shul building has 2 minyanim. The main one has a professional chazzan. We begin Shabbat services at 9 am ...
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1answer
66 views

How traditional measurements of Omer fit with Shemot 16:16?

According to this Omer is 2.5 liters or more. This is too much bread per person as specified in Shemot 16:16? How do traditional sources justify the value of Omer? Shemot 16:4,8,12,15 e.t.c calls it ...
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1answer
77 views

What is Omer and how much is it?

My understanding is that Omer is a handfuls, which is about 1 US Cup or 236g. This is exact amount needed to produce bread for one day for one healthy adult. What do traditional sources say an Omer ...
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88 views

How much skin is a woman halachically allowed to show from the neck downward?

Is there a requirement to how much skin a woman can show - when going out in public - from where the neck ends to where the torso begins going downward at the top of her shirt? The question is ...
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12 views

Why are Shabbat candles lit 18 minutes before sunset? [duplicate]

My understanding is that the number 18 is the amount of time it takes for an average person to walk 1 mil (side Q, how does this measurement translate to current English or metric units?) Why was ...
5
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1answer
228 views

Minimum amount of food for Beracha Rishona

I've heard much discussion about minimal amounts of food to qualify as eating (eg. this discussion about how much Matza to eat at the Seder). How much would one need to eat in order to say a Beracha ...
3
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1answer
393 views

Which is the height considered 3 tefachim for not “praying in height”? (30cm?)

Recently we had to make a synagogue for one day at a hall, and we used a scaffold for the Shaliach tzibbur to be well heard by all the public. The Scaffold was 1m x 1.5m, and I don't remember the ...
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1answer
46 views

Teaching halacha to children with halachically invalid “props”

The Talmud (Sukkah 2b; cited also here) implies that chinukh (educating children in halacha observance) necessitates that the mitzvah be fulfilled according to its halachik details (at least with ...
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4answers
956 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 ...
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1answer
122 views

Shiur for kiddush rabba mezonos

When we make kiddush rabba with mezonos before having a real meal with bread, is there a shiur for how much mezonos a person should eat in order for it to be yotzei kiddush? Does it matter whether the ...
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1answer
99 views

What is the shiur Hanaah?

How much Hanaah (physical benefit) must one have of things prohibited as an Issur Hanaah (things forbidden for benefit) like milk and meat, Kiley HaKerem (certain grape mixtures), or Avoda Zara (...
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2answers
155 views

How big can a mezuzah be?

I read in the news about an Israeli designer, Yaakov Merdinger, who created the world's largest mezuzah case. As you can see in the photo, the mezuzah case is bigger than the door. Is this kosher?
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1answer
41 views

How far does one have to go into the ocean to say HaGomel?

When one goes "into" the sea, one is obligated to say HaGomel (see Berachos 54). How far does one have to go to be considered "in" the sea? If one goes swimming on the beach, does one say HaGomel? ...
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1answer
153 views

The Chofetz Chaim's kiddush cup

I read somewhere (don't remember where) that the Chofetz Chaim used a kiddush cup that was a smaller shiur than he recommends to use in his Mishna Berurah. Can anyone verify this and/or explain the ...
3
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2answers
174 views

How long does entire process of baking matzo take to be kosher?

If one would like to bake matzo or use flour to make a Passover food, how long do we have for the process to take place? If 18 min, then is that 18m59s or 18m00s? If the food is cooked before 18 ...
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1answer
231 views

What is the hallachic definition of randomness?

A new Shabbat-friendly technology, KosherSwitch, uses randomly timed light pulses to create various safeks, so that flipping the switch does not hallachically count as switching the light on, even in ...
8
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3answers
387 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?
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1answer
304 views

Is ice considered food or drink in Halacha?

Is ice considered food or drink in Halacha? So for example, if one would eat an kezais of ice on yom Kippur, but it would not be equal to a reviyis, would he be liable for a chatas?
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1answer
47 views

Is there a concise book on how math and measurements are used in Torah and talmud?

Both the Torah and Gemarrah use math in various places, e.g. percentages (5ths (certain penalties); 10ths (ma'aser), etc.) They also use many terms of measurements - e.g. shekel = 20 gerah; numerous ...
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0answers
65 views

Can you carry an object from the step outside your house inside your house?

According to the laws of carrying on shabbos one may not carry from one domain to another aside from a makom petur ("exempt area"). A makom petur is less that 4X4 handbreadths and more than three ...
6
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2answers
189 views

Source for the concept of learning 1 hour on Shabbat is like 1000 during the week?

There is a Benayahu on Taanit 11a I think that may hint to this, but not clear enough. Is there an actual source for "1 hour learning on shabbat is like 1000 hours during the week"?
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1answer
157 views

Regarding chametz, what is considered “not fit to be eaten by a dog”?

Regarding whether something needs to be considered chametz or not, there is a general rule of ראוי לאכילת כלב - i.e. - if a dog wouldn't eat it, then it's not considered food and therefore it is not ...
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1answer
240 views

What are these three types of Amos?

I'm not one to usually go to Google itself to learn about Judaism, but I feel that the circumstances around how I discovered this is really intriguing... Google Maps has a nice little feature that ...
10
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1answer
256 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 ...
3
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3answers
105 views

Ad Dlo Yoda measurments

What are the many Halachic options of doing the Mitzvah of drinking on Purim please quote sources? Meaning what are the diffrent the definitions of ad Dlo Yoda?
4
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2answers
97 views

What was the volume of oil for one day's lighting of the Menorah?

Large jars for storing oil or wine were common in Judah. For 100’s of years, oil and wine were the commodities that were used to pay tribute and taxes. Many storage jars were standardized and may ...
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2answers
115 views

Where does the contemporary measurement of a Kezayit come from?

According to the Nodeh B'Yehuda and the Chazon Ish, in order to calculate the size of a kezayis (which apparently is based on the size of an egg), we must double the size of our contemporary eggs. (...
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2answers
129 views

Ending place of the Peya

It seems from my understanding of the Shulhan Aruch (Y"D 181:9) that the picture above is the Shiur of the Peya. However it seems like most people say it goes until the bone like the picture below. ...
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Would halachic units be shrunk if a person was (Honey, I Shrunk the Kids-style)?

In the classic move Honey, I Shrunk the Kids and its sequels, people get shrunk down to 1/264th of their normal size. So, a person is around 1/4 of an inch tall. If such a thing were even possible, ...