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

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21
votes
3answers
3k 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, ...
17
votes
2answers
1k views

Bootstrapping problem: havdalah ends shabbat (for one who didn't daven ma'ariv) but lighting the candle is melacha?

This answer to a question about melacha before havdalah notes that in that situation one should say "baruch hamavdil bein kodesh l'chol" first. Does that apply to lighting the havdalah candle? I ...
19
votes
3answers
730 views

Can I cause a Melacha to happen in a place where Shabbat has already started?

Can I cause a Melacha to happen in a place where Shabbat has already started? For example, if I live in New York, could I send a fax (causing the machine to print a document) to Israel on Friday ...
9
votes
2answers
1k views

Blowing bubbles on Shabbos

Is there any halachik problem with blowing bubbles on Shabbos? If so what melacha categories does it fall under? Does the age of the blower matter?
11
votes
2answers
713 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, ...
4
votes
1answer
292 views

Borer and Grinding on Yom Tov - and other Melachoth that are Ochel Nefesh

Which Melachoth are prohibited on Shabbath but are permissible to perform on Yom Tov because of the exception of Ochel Nefesh? Famously, cooking and carrying in the public domain are allowed, yet ...
9
votes
3answers
1k views

Do you have to close your blog / website on shabbos?

Do you have to close your blog on shabbos?
13
votes
4answers
687 views

Typing on Chol Hamoed

Is typing allowed on Chol Hamoed? Does it make a difference if whatever is typed will be printed afterwards?
1
vote
2answers
124 views

Learning non-jewish topics as a creative process during Shabbat

Is 'learning' non-Jewish topics a prohibited creative process on Shabbat? If so, on what grounds is learning Tanakh exempted? I read that the study non-Jewish subjects is banned or frowned upon, and I ...
5
votes
2answers
219 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?
11
votes
1answer
525 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 ...
20
votes
6answers
3k views

Is using a (non-touch-screen) 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 ...
9
votes
3answers
282 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 ...
7
votes
1answer
244 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 ...
16
votes
3answers
990 views

Inviting a non-observant Jew on Shabbat or Yom Tov

Can I invite a Jew for a meal on Shabbat or Yom Tov if I know they will drive to my house?
9
votes
3answers
677 views

Non-Yemenites who heat up soup after the start of Shabbat?

The most widely held practice regarding heating up liquids on Shabbat is that it is prohibited, though there are differences of practice between Ashkenazim and Sephardim regarding sauces and such (...
8
votes
2answers
960 views

Where does the concept of a Kli Shlishi come from?

When it comes to cooking on Shabbos, most people hold that things that are not allowed to be put in a Kli Sheni (a vessel once removed from the vessel that was on the fire) because it is considered ...
16
votes
4answers
281 views

May a Katan (minor) perform Melachah (“work”) on Shabbath?

In my experience, I've noticed that many people take for granted that if one needs a Melachah to be performed on Shabbath, one may have a minor, especially one under the age of 3, perform what is ...
10
votes
2answers
266 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 ...
9
votes
1answer
405 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 ...
7
votes
3answers
368 views

Difference between Pesik Reshe Delo Niha Le, Pesik Reshe Delo Ichpat Le, & Melacha She'en Sarich LeGufa

What is the practical difference between actions considered Pesik Reshe Delo Niha Le, Pesik Reshe Delo Ichpat Le, and Melecha She'en Sarich Legufa? What is an example that can demonstrate the ...
7
votes
1answer
550 views

Asking Questions on StackOverflow on Erev Shabbos

Is there a problem with asking a programming question on StackOverflow (or any other StackExchange site) on Erev Shabbos, so that they will eventually be answered by the time Motzei Shabbos arrives? ...
5
votes
1answer
467 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, ...
5
votes
3answers
149 views

Why are Milochos based on the construction of the Mishkan?

If we were to receive all the laws for shabbos at Sinai why then is it the Mishkan to where we direct our attention when it comes to classifying all the things we cannot do on Shabbos? Wasn't the ...
4
votes
3answers
288 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 ...
4
votes
2answers
995 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 ...
3
votes
3answers
458 views

Can I light a new fire on yom tov?

If I can transfer a fire, can I light a new fire on yom tov? What's the difference between lighting a new fire and transferring a fire? Aren't they part of the same melacha?? The melacha is to create ...
3
votes
2answers
156 views

Can a Gentile shovel / plow snow from your driveway on Shabbat if he has been paid for general work?

I read in Kitzur Shulcah Aruch (סימן צ - דין עשית חפציו בלא מלאכה ומלאכה על ידי גוי) that even if a person prepays a Gentile before Shabbat, he cannot tell him to specifically do work for him ...
3
votes
3answers
384 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 ...
2
votes
1answer
87 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 ...
12
votes
2answers
329 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 ...
12
votes
3answers
209 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 (...
11
votes
3answers
709 views

Tying a Tie on Shabbos

How should one tie a tie on Shabbos (or yom tov) so that it doesn't have any knot problems? In other words there are lots of ways to tie a tie. I was wondering which of these are okay for use on ...
7
votes
1answer
300 views

Benefiting from work done by a non-observant Jew after Shabbat

Observant Jews do not resume doing melacha after Shabbat until after Havdalah. But not all Jews do this. So may you benefit from work done by a non-observant Jew after Shabbat ends, even if he did not ...
6
votes
2answers
540 views

Using Eiruv Tavshilin to Cook for a Gentile Shabbos Guest

When cooking on Yomtov for Shabbos (allowed with the eiruv tavshilin) may one also cook for a gentile guest that he will be having at the Shabbos meal? Even though one cannot cook on Yomtov for a ...
5
votes
1answer
189 views

Biblical Prohibition of Breaking Shabbos/Shabbat

Somebody does not think that something is breaking Shabbos but suspects it may be an issue, yet they don't want to delve into the law because they don't want to stop doing what they are doing and they ...
5
votes
0answers
167 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 ...
5
votes
1answer
237 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 ...
4
votes
5answers
212 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 ...
1
vote
0answers
89 views

answering questions on mi.yodeya on Chol Hamoed [duplicate]

Possible Duplicate: Typing on Chol Hamoed Is answering questions on mi.yodeya.com considered working therby making it assur to go on the website on chol hamod
0
votes
3answers
142 views

What is considered work on the sabath?

I was reading about sabbath observances in modern practice and I found a lot of caution and effort is expended to not work: like, even switching on the lights or lifting things could be considered as ...
11
votes
1answer
235 views

Is it permitted to use a thermochromic cup on Shabbos?

A novelty cup, see for example here, appears black when cold. When hot liquid is poured into it, the black changes to white and the previously concealed writing (underneath, so to speak) becomes ...
11
votes
2answers
799 views

Shoveling snow on Shabbos

Regardless of snows muktza status on shabbos, is there an issue in shoveling snow from a paved walk? At worst: If snow is muktza, you are doing tiltul min hatzad letzurach davr mutar since you need ...
7
votes
3answers
449 views

Can you leave video chat on over Shabbos?

Basically: Can you leave your computer with video chat on (to another person) on over shabbos? And what if there's also audio? For example a relative in the hospital, relatives that in a far away ...
7
votes
2answers
135 views

Why was the man in Numbers 15 put to death?

Once, when the Israelites were in the wilderness, they came upon a man gathering wood on the Sabbath day. Those who found him as he was gathering wood brought him before Moses, Aaron, and the whole ...
7
votes
5answers
737 views

malacha from child

is one allowed to ask a child to do a malacha of shabbos? does your answer also apply to a non-Jew?
7
votes
3answers
93 views

Melachah on Shabbath - after Shabbath

If Melachah was done on Shabbath, can the product of that Melachah be enjoyed after Shabbath, and if so, under what criteria (does it depend on how long after Shabbath, or on the need, or something ...
7
votes
2answers
219 views

Is using a book with letters stamped on the sides melacha (erasing) if the book wasn't closed in the first place?

A comment on this question points to the following from OU: Likewise, when words are stamped on the edge of a book (as is the case with most library books), these letters are separated when the ...
6
votes
2answers
519 views

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

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 ...
5
votes
1answer
141 views

Can a talit be a tent?

There are two situations in which a talit is held aloft in a possibly tent-like manner that make me wonder whether they present any danger of transgressing the prohibition of "Building" on Shabbat and ...