The negative commandment of "lifnei iver lo titein michshol", literally "don't place a stumbling block in front of the blind", refers to the prohibition of misleading people.

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Igros Moshe citation: prohibiting giving a lighter to a smoker

In this recorded lecture, Rabbi Akiva Tatz mentions that R' Moshe Feinstein (who famously did not prohibit smoking, though see here) forbade a person from handing a lighter to a person who smokes ...
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Because of forgetfulness, I caused other Jews to eat dairy after meat. What can I do to atone? [closed]

I baked carob brownies for tu b'shvat with butter. The next day, I made pareve barley soup and a dairy dessert. I took these (& other pareve stuff) to my son's house for a tu b'shvat seder. They ...
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What are the most commonly-held positions regarding Kol Isha?

As a woman, I am mindful of the need to avoid putting Jewish men in inevitable situations of kol isha (hearing a woman's singing voice). However, I have heard many interpretations of this law, and I ...
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Issues of lifnei iver with non-Jews

Is the prohibition against lifnei iver--causing someone to sin--applicable if one causes a non-Jew to violate the Noachide Laws? For example, suppose I (ch"v) give a Noachide something to eat that was ...
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256 views

Gentile's responsibility to non observant Jews

What kind of responsibility has a Gentile to Jews who are not observant? For example, a Gentile sends a text message to his non-observant Jewish friend, knowing that he will most probably write a ...
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120 views

Accidentally served a guest meat and milk

If someone accidentally served a guest a milk-and-meat combination and realized his mistake after the fact, should he ask the guest for mechilah (forgiveness)?
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Lifnei Iver for a chinuch-age child

Is there a prohibition of lifnei iver (causing or being an accessory to someone else's sinning) for a child who has reached the age of chinuch (education to mitzvos, the point at which he/she should ...
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132 views

Talking on the phone when it's shabbos for the other person [closed]

I am not religious, but I have relatives who are. I live in the US and some of my relatives live in Israel. Can they talk to me when it is after shabbos in Israel, but it's still shabbos in the US? ...
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Issues of lifnei iver with an inaccurate clock

Is there any problem with lifnei iver (giving bad information) in having an inaccurate clock that someone else will look at? I'll examine a few cases here. The clock is a few minutes off. I don't ...
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152 views

Is a Reform convert considered not-Jewish or safek Jewish?

I am basing this question on something I read somewhere: that a non-Jew is able to accept the Torah and obligate himself in mitzvot independent of the bet din (court) conversion procedure. A non-Jew ...
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87 views

Aiding what you consider sin but he doesn't

There is an action. Let's call it "hoobling". Some pos'kim say hoobling is permitted and others say it's forbidden. (Note: not "say one should ideally be strict". They say it's forbidden.) Suppose ...
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bar mitzvah and wedding invitations

I read somewhere that bar mitzvah and wedding invitations should not contain pesukim. If one receives a bar mitzvah or wedding invitation that contains pesukim and throws it into the garbage, has the ...
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May I give non-mevushal wine to a non-Jew?

If I know that non-mevushal wine is available to be used for avodah zarah (as in http://www.mechon-mamre.org/i/5211.htm) and that the prohibition against lifnei iver includes non-Jews[1], then am I ...
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Is Mi Yodeya allowed to tweet on Shabbos?

I recently signed up for @StackJudaism tweets, just to see what's going on here when not logged in. These tweets are automatically sent out by the Stack Exchange, which is done for every SE site. ...
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How is lack of tznius lifnei eiver?

Rabbi Ovadia Yosef, zt’l in Yechaveh Da’as III #67 indicates that a woman who dresses immodestly violates lifnei eiver. How/why does a woman dressing immodestly transgress the prohibition of lifnei ...
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245 views

Sending emails to people who will read/answer them on shabbat

Is it permissible to send an e-mail on Friday afternoon, knowing it will be answered or at least read on shabbat by a Jew? I am inclined to think that, since the alternative to someone ...
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Miswa of Lifne Iwer isn't what the words mean literally?

My fellow Jew (let's call him Bob) and I were discussing the Miswa of "You shall not place a stumbling block in front of a blind person (Wayikra 19)". Bob was saying that that verse was referring to ...
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Is instigating a crime through careless choices of words a violation of Lifnei 'Iver?

I would like to look at the scope of Lifnei 'Iver -- the commandment to not put a stumbling block before the blind (Lev. 19:14). Specifically, I would like to know how one is punished for the sin -- ...
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BT emailing non-observant family on Friday afternoon

A given person is Shabbat-observant; his/her immediate and extended family is not. May this individual write an email to his/her family (who live in Israel) when it is before Shabbat (where s/he ...
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When not a problem of lifnei iver, still mitzvah to be mafrish (seperate) from issur

Tosfos says in Shabbos Daf 3a that even when there isn't a problem of lifnei iver since the person would be able to get to the prohibited thing in another way, still there is an "issur d'rabbanan" ...
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Borders of obligation when witnessing a robbery [closed]

Today I watched while a man walked into a pastry shop, took a large box of cookies and put it into his bag. He then walked out of the store and away, disregarding my stink eye on him. If I were to ...
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Waiting to reveal Kosher issue in order to get to the root of the problem

Suppose a Mashgiach realizes that a store is selling Treif meat, however is unsure as to the source of the problem. If he announces immediately that this store is selling something not Kosher he may ...
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Working in a non kosher yogurt store

I was asked a question this afternoon and I don't know a good answer (yet) so I'm posting it. I have been asked in the past whether a Jewish person may work in a non-Kosher restaurant that serves ...
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Does the mitzvah to return a lost object apply to aveirah items?

I recently saw a flyer that quoted from R' Chaim Kanievsky, Shlita as saying that if one find a smartphone that is not "kosher" there is no mitzvah obligation to return it. Is this in fact the ...
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Did people ever place actual physical stumbling blocks before the blind?

I know that the prohibition against placing stumbling blocks before the blind has been understood to be a prohibition against misleading or causing people to sin, but the simple meaning of the text is ...
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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?
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Lifnei 'Iver and your maybe-Jewish co-worker

I work in an office in which someone working down the hall is disabled. She has a Jewish sounding last name and talks to me about her family's practices in regard to being members of a Reform temple ...
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How to avoid helping someone sin?

Are there any tips anyone would care to provide to help one avoid (or get out of) a workplace situation in which one has been asked to assist someone do something that violates Halachah? Examples ...
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Lifnei 'Iver in public policy/business

How far does Lifnei 'Iver extend? Earlier versions of this question led to a good deal of speculation of how an individual should respond to issues of public policy and business that may be contrary ...