Commonly refers to acts of labor that are forbidden on Shabbos/Yom Tov.

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cleaning smooth shiny surfaces on shabbos

How may one clean a sticky shiny smooth surface on Shabbos? During the week one can simply wet a napkin and then wipe the surface, but on shabbos you're not allowed to wet a material due to a ...
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1answer
227 views

What constitutes a shinui?

I was recently taught the concept of a shinui to be "something done in a way that is unusual compared to the norm in one's area of residence", with respect to the permissibility of actions done on ...
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6answers
2k views

Is using a Kindle on Shabbat permitted?

A Kindle is an e-book reader that uses "e-ink" rather than an LCD screen. It has physical controls to turn pages. (This question is not about the newer ones with touch screens.) If left unused it ...
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0answers
54 views

What are the halachos of חולה שאין בו סכנה on Shabbos?

Ok, so I had my wisdom teeth pulled out yesterday, and besides the pain it's very hard for me to eat regular food. Unfortunately we do not have a gentile to do melachah for me as far as mashing up ...
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3answers
990 views
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2answers
552 views

Is there any issue with using aerosols on Shabbos?

I've heard from many people that you shouldn't use aerosols (such as air fresheners, disinfectants or deodorants) on shabbos, usually citing some vague reason of changing the form from liquid to gas, ...
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1answer
131 views

Hotels, electronic keys, and shabbat

Is it permissible to ask a non-Jewish hotel employee to let you into your hotel room on shabbat if the only way to unlock the hotel room is through the use of an electronic key? It seems like many ...
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1answer
67 views

Apple Watch on Shabbat

Tech experts: Is there any way in which the Apple Watch could be used by shomrei Shabbat with limited functionality? Note: this question does not seek to ascertain whether the full gamut of features ...
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4answers
68 views

practical examples of a grama

I was trying to give a practical example of a grama the other day, and couldn't think of one. While there are plenty of devices which employ gramas deliberately (grama switches, shabbat electric ...
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1answer
96 views

Until what time before sunset (shekiya) can you work Erev Shabbos (Friday)?

I remember reading somewhere that you can't work 2 hours before Shabbos starts. What exactly is the halacha? If you have a regular 9-5 job. When do you have to end working on Friday's--assuming your ...
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2answers
510 views

Is it permissible to use an umbrella on Shabbat?

Assuming one is inside an eruv which generally permits transferring between domains on Shabbat, may one use an umbrella on Shabbat? If not, why not? Follow-up question: What about other things that ...
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1answer
78 views

Trapping mosquitoes on Shabbat

If there's a mosquito found on a wall on shabbat, are you allowed to place a cup over it and slide a sheet of paper under it and remove it from the house? The reason for doing this would be that you ...
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1answer
157 views

Applying hand cream on Shabbos

Regarding dry, chapped skin that requires regular application of moisturizing cream, is someone allowed apply this cream on Shabbos? Does the composition or texture of the cream change the answer?
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1answer
60 views

May one read a map or document hung on the wall by a Jew during Shabbos?

Let's say a Jew hung a map or a document on the wall on Shabbos. For the purposes of this question, let's assume that this was a desecration of Shabbos (presumably because of the prohibition on ...
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3answers
2k views

Why can't electricity be manipulated on Shabbat?

Why can't we use and change electricity on Shabbat and YomTov? By this I mean why can't we turn on and off lights...? I'v heard Rabbis say that its because you can't complete a circuit on Shabbat, ...
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2answers
158 views

Tzoveah on Shabbos

It is going to sound strange but here is the question In the toilet there are these blue things that clean your bathroom with every flush by adding bleach hence it colors the water blue every time you ...
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1answer
47 views

Questions regarding the melacha of “borer” - separating / sorting on Shabbat

Are these two activities considered a violation of "borer" on Shabbat? Playing cards where you must separate the cards into the 4 suits (hearts, spades, diamonds, clubs) Sorting flatware into ...
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1answer
88 views

How could Moshe write on Shabbos?

I once saw this question in the magazine Kolmus: There's a tradition that Moshe wrote thirteen sifrei Torah on the day of his death. However, there are many opinions that Moshe died on Shabbos, ...
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1answer
41 views

Biblical vs. Rabbinical end of Shabbat

This question states, "havdalah ends shabbat (for one who didn't daven ma'ariv)." But won't Shabbat end on its own at some point--specifically, at nightfall--even if we don't make havdalah nor daven ...
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3answers
164 views

What if you undo a shabbat melacha?

If you plant a seed shortly before the end of shabbat (zoraya) and then un-bury it after shabbat, or you put an uncooked food into an oven and then take it out within seconds without it having baked ...
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1answer
52 views

Enabling a Jew in a melacha

I know you're not supposed to do a melacha on Shabbos in order to prevent another Jew from doing one. But is it prohibited to do something (not a melacha) which will likely enable another Jew to do a ...
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1answer
14 views

Is dvar sheina mitchaven permitted if the melacha is inevitable?

My question refers to the class of permitted actions that may inadvertently cause melachas as byproducts. (For example, with hair brushing, the intention is not to pull out the hair, but this does ...
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2answers
290 views

10th man drove to shul on shabbat

If one of precisely ten men, who form a minyan, had driven to shul (the synagogue) on shabbat, is that an acceptable minyan? I would have though not, since one is benefiting from his melacha on ...
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1answer
322 views

Can you derive benefit from another Jew's melacha if it happened a long time ago?

We aren't supposed to derive benefit from melachot performed by other Jews on Shabbos. But what if it didn't happen this Shabbos? What if our guest brought a bottle of liquor as a gift last Shabbos, ...
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1answer
464 views

Sealing an envelope on shabbat

On Shabbat, is it permissible to seal an envelope that does not require moistening, ie an envelope that has a PEEL & SEAL flap?
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2answers
152 views

Opening bottles and creating a Keli on Shabbath

Does opening a new bottle create a new Keli, such that it would be prohibited on Shabbath? (I personally don't think so for a few reasons. However, someone posted this question a little while ago ...
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1answer
160 views

Typing on Shabbos

If one would type on a computer on Shabbos would he be ovar an issur d'oraisa in regards to the malacha of writing? (The other malachos involved aside for a moment.) Is there any room to say this ...
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Can a Shabbat guest benefit from food that the host prepares if his custom is to forbid that preparation? [duplicate]

I see that there is a debate whether a person can use canned whipped cream on Shabbat. Refer to This discussion. Suppose that I forbid using canned whipped cream. I am a guest a someone's home and my ...
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1answer
75 views

Tanning on Shabbos

Is it permissible to suntan on Shabbos? The possible prohibition would be tzoveah -- dyeing. Is it considered permanent enough to be Biblically prohibited? Is it dyeing at all being that no coloring ...
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2answers
365 views

Can a Jew who is keeping the Shabbat rules ask another Jew who is not keeping shabbat to turn on/off the lights?

The situation is that I am currently living in dorm rooms with a Jewish person who has decided to keep Shabbat. I am a Jew who does not keep Shabbat, but I respect my dorm mate and do not want to ...
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1answer
139 views

Can I use the “Sabbath mode” on the refrigerator if it is not certified?

We are looking to buy a new refrigerator that has a Sabbath mode. We noticed that both the GE Profile and Kitchenaid fridges have Sabbath modes, but the Kitchenaid is certified by the Star K and the ...
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0answers
61 views

Sewage treatment on Shabbos

Is there a problem with flushing a toilet or sending other water into the US sewage treatment system on Shabbos if by doing so you are perhaps indirectly, causing the mechanical work involved in ...
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how to clean up from one meal for another on shabbos?

if after putting all of the trash in the trash can there are lots of crumbs still left behind how should one get rid of these properly on shabbos? may one shake the crumbs outside (assuming its in ...
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1answer
87 views

Can I prepare tehina (from a paste, ie, pre-ground) on Shabbat?

I know that one is not allowed to smear a paste on Shabbat. (Forgot the name of the "melacha:). I notice that this is what happens to techina as I prepare it (plain unflavored tehina like Joyva from ...
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2answers
184 views

Relations on Shabbat

It is my understanding that restrictions and prohibitions on the Sabbath more accurately concern "creating" or "destroying" rather than the stereotypical concept of "working". Why is it then ...
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2answers
214 views

Which types of light bulbs are 'only' an issur d'rabbanan to activate on Shabbat

I'd be very interested to know if anyone has definitive advice on which types of light bulbs are considered an issur d'rabbanan (Rabbinic prohibition) vs an issur d'oraita (Torah prohibition) to turn ...
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2answers
186 views

Ask a friend to carry on Shabbos

Suppose there are two friends: one holds of the eiruv and the other doesn't. Is the second allowed to ask the first to carry for him? And if the first anyways carried it, can the second benefit from ...
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2answers
361 views

Laws regarding putting someone to death for violating the sabbath

Two witnesses go to the beit din and claim that so and so violated the sabbath on a biblical level. The witnesses claim they warned him in accordance with the rules and they did their part as ...
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2answers
320 views

Picking fruit vs slaughtering on yom tov

We know the concept of ochel nefesh regarding yom tov. And we know that you can do melacha that is directly related to food, (like frying an egg). My question is, why is שחיטה permitted if there's ...
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1answer
52 views

What is the [reason for the] issur of “uvdah d'chol”

Why find things that are ossur to do on Shabbos not because they fall into the category of any particular "malacha" (type of work) but rather because of "uvdah d'chol". Something that is normally done ...
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3answers
156 views

What's wrong with making coffee on Shabbat?

If, on Shabbat, someone pours water from a kli shlishi (which according to all opinions I'm aware of) over coffee beans which are laying on a filter is there any problem with drinking the resulting ...
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1answer
94 views

Are you allowed to give a Jewish driver directions to your shul on Shabbat?

While you are walking to the synagogue on Shabbat, a Jewish driver stops his car and asks you how to drive to that synagogue. Is there any problem giving him the directions? Are you facilitating or ...
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1answer
207 views

Should separating pull apart Challah rolls be considered a forbidden act of completion?

I have heard many people state that using Challah* rolls that are baked in one unit to be pulled apart might be a problem for making Leḥem** Mishneh on Shabbath. In fact, there are rolls that are sold ...
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1answer
98 views

Returning a Library Book on Shabbat

When I return a book I put it in a bin, and a (non-Jewish) worker later takes it from the bin, and scans it into the computer as "returned." As such, can I return a library book on Shabbat?
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2answers
81 views

Can you plunge a toilet in your parents' home during Chol Ha'moed?

You live in your parents' home. It's Chol Ha'moed. There are four bathrooms. You use one of them, and the toilet clogs. Is it permissible for you to plunge it during Chol Ha'moed? Please explain ...
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3answers
216 views

Israeli making pizza on last day of Pesach in the Diaspora

A Jew who lives in the U.S. own a pizza store. He wants to be sure that he has plenty of fresh pizzas ready to sell as soon as Pesach is over. So, before Pesach, he sells his chametz to his Israeli ...
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Making bedikas chometz early — ossur in malacha, eating, learning?

When someone leaves their home within 30 days of Pesach without someone to be bodek it from chometz, they themselves have to be bodek it early (See Siman 436.) In the normal case of bedikas chometz ...
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2answers
144 views

What is the punishment for Patur Aval Issur?

If one does something on Shabbos, say, that is patur aval issur (like an act of destruction) what is the punishment? I know that Beis Din (court) does nothing, but are there any sources for what the ...
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Temporary tattoos on Shabbas

Are temporary tattoos (the decal-types that you press on to someone) melacha? My instinct says they are melacha, but what av melacha do they fall under? Are they writing even if they don't contain ...
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140 views

Why allowed on Yom Tov?

According to the Torah, melacha isn't permitted on Yom Tov days except for what is needed for food. I read that certain laws, like carrying, don't apply on these days because they are loosened for ...