Questions seeking sources for a given practice or idea, or seeking the location of a specific source.

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7
votes
4answers
562 views

Why a human Messiah?

I understand that Mashiach is going to be a human. What is the source for this, and are there any explanations why it must be so? Can't G-d Himself redeem us?
6
votes
3answers
393 views

What's the deal with all the washings?

Sometimes we wash with a cup, sometimes not; sometimes we wash twice, sometimes thrice; and not everyone agrees on method or pattern in all cases. Who says which ways we are supposed to wash, in ...
30
votes
24answers
2k views

About what were rabbis ahead of the times?

I have heard claims that experts in the world of Torah were significantly ahead of their counterparts in the world of natural science (or mathematics, or psychology, or…) in that they knew X ...
8
votes
3answers
2k views

Rainbow as a bad omen

There is a popular idea that seeing a rainbow is a bad sign, as if the world is deserving of a deluge (c"v) and the only reason Hashem does not do so is because of His promise. Is there any source for ...
12
votes
4answers
1k views

Sources For Listening To/Not Listening to Non-Jewish Music

What are sources for it being allowed to listen to non-Jewish music and sources for it being prohibited?
6
votes
3answers
566 views

Source for the prohibition against Nivul Peh (foul mouth)

What is the source for the prohibition against Nivul Peh (using foul language)? Is it Biblical? Rabbinic? "Asmachta" (based on a principle derived from the Torah but ultimately not considered a ...
10
votes
1answer
717 views

Halachic justification to not pray the amidah before zman t'filah?

Some Chassidic courts are not makpid (careful) to daven the morning Amidah before z'man tefilah, although this seems to be a clear halacha. Are there any opinions they are relying on? I was once told ...
15
votes
4answers
2k views

If masturbation is so bad, why is it not in list of 613 Mitzvos?

If masturbation is, as stated in the Shulchan Oruch (Even HaEzer 23:1), "the worst sin in the Torah", then why is it not listed in any of the various lists of 613 Mitzvos and why is there no verse in ...
26
votes
6answers
789 views

Where does the concept of Gilgulim (reincarnations) in Judaism come from?

What is the source of Gilgulim (reincarnations) in Judaism? Are there people who disagree with its existence? Who was the first to mention it? What I am asking essentially is what is the historical ...
23
votes
2answers
389 views

Matza on 14 Iyar

I have seen a custom (it seems to me primarily among Chassidim) to eat matza on 14 Iyar (known as Pesach Sheni). What is the earliest source for this custom? What are the reasons given for following ...
8
votes
1answer
280 views

Rishonim saying Ester took place during the second bayis

Elsewhere on this site, avi cited sources to the effect that, contrary to the Bavli (M'gila), the events recounted in the book of Ester took place after the second bes hamikdash was built. Do any ...
7
votes
4answers
835 views

From where do we know that sexual intercourse with a non-jewish woman is forbidden?

From where do we know that a jewish man cannot have sexuel intercourse with a non-jewish woman? What say the Kabbala about this ? Is it related to dark forces, "qelipoth"?
15
votes
5answers
489 views

Saying “Laberiut” “God bless you” or “Gesundheit”

Is there are source for saying "Laberiut" "God bless you" "Gesundheit" or any other response to a sneeze? In other words, are there posekim who mention it in Halacha?
9
votes
1answer
332 views

May one propose with an engagement ring?

Are there any Halachic issues with giving a girl a ring while asking her to marry him? Are there any sources that discuss the sha'alah of safek Kiddushin, etc?
8
votes
1answer
227 views

Origin of Spilling Wine by 10 Plagues

The custom among all Jews (as far as I know) is to spill a drip of wine for each of the plagues as they are mentioned in a list in the haggadah. This custom is not mentioned anywhere in the Talmud (as ...
10
votes
1answer
389 views

Dipping fingers in Havdalah Wine

What is the source or origin of the custom to dip one's fingers in the wine poured over the candle to extinguish it at the conclusion of Havdalah? As a side note, and a reason I'm tagging it this ...
6
votes
2answers
1k views

A Convert taking on customs of ashkanazim or sephardim

When someone converts is there any determining factor on what minhagim (customs) they will take upon themselves in terms of Ashkanazim or Sephardim? Should it be dependent on the Beis Din they ...
6
votes
2answers
231 views

Rubbing the Havdalah wine

Is there any source for the practice of not only dipping one's fingers into the Havdalah wine that was used to extinguish the fire and rubbing the eyes with it, but also spreading it around onto other ...
2
votes
2answers
411 views

What is the source for a woman's voice as ervah?

What is the source that a woman's (singing) voice is considered ervah?
23
votes
3answers
1k views

Premature birth contradicting science

I am a teacher at a private all-girls Jewish high school. There are two science teachers in the school, and both of us are Christian. I was talking with my fellow science teacher recently, and she ...
13
votes
3answers
382 views

How do we know that we have free will?

Where in the torah does it state that humans have, and are entitled to in perpetuity, free will?
13
votes
1answer
275 views

Lechem Mishlesh?

(Based on Tosfot Pesachim 116a and Aruch haShulchan 274:5 I assume that the man did not fall on Yom Tov and double fell on Erev Yom Tov, and that this is why we have lechem mishne on Yom Tov.) When ...
12
votes
2answers
381 views

Who didn't recite Kabbalas Shabbos?

In this article, R. Michael Broyde writes that: Indeed, there have been prominent halachic authorities of the last generation who did not recite Kabbalat Shabbat. Can anyone provide examples of ...
7
votes
1answer
192 views

Explanation for couple not seeing each other before the wedding?

What is the source and reason for a couple not to see one another before the wedding?
9
votes
1answer
341 views

Embarrassing a Baal Teshuva

Be'er Hagolah at the end of Yoreh Deah 334 says that one of the things that are considered Cherem D'Rabeinu Gersom is not to embarrass a Baal Teshuva regarding his previous lifestyle. Yet when you ...
6
votes
1answer
247 views

Does anyone have a proof text that animals *don't* have spirits?

I've heard it said that animals don't possess a רוח However, Ecclesiastes 3:21 uses the phrase רוּחַ הַבְּהֵמָה. Is there any text that indicates that animals don't possess a spirit? Edit: Upon ...
6
votes
1answer
212 views

Where does the custom to spill off from a drink come from?

I had a Lubavitcher classmate in high school who used to spill off from his cup whenever he would drink anything. He claimed it was a minhag. What is the reason/source for this practice?
3
votes
3answers
143 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 ...
0
votes
1answer
110 views

man is greater than an angel

I heard from someone, that man is greater than an angel. For an angel can never reach higher levels in spirituality, while man can. In addition, man struggles with his evil inclination and an angel ...
16
votes
5answers
823 views

Gezeira of Rabbeinu Gershom text

Does anyone know where I can find the actual text of the Gezeira of Rabbeinu Gershom? It keeps popping up in my learning, but only as being referenced, I would like to read that actual text.
10
votes
4answers
385 views

What is the source for Pardes?

What is the source for expounding the torah according to remez, derush and sod (along with 'pshat' the group can be referred to by the acronym PaRDeS)? These forms of hermeneutics are not found in ...
9
votes
3answers
252 views

What is the source for the mitzvah of kiruv?

Is kiruv a mitzvah? Is it biblical or rabbinic? Is there any reason it should supersede other mitzvot? what are the sources in chazal and halacha relating to kiruv? related: Kiruv and halachik ...
5
votes
1answer
297 views

Why are wedding invitation abbreviated b'rachos different for males and females?

Many wedding invitations written in Hebrew that I've seen have the abbreviations נ"י - after the groom's name - and תחי'‏ - after the bride's name. (Example) Sometimes they are slight alterations ...
5
votes
4answers
273 views

Do a mitzva for mashiach?

I recently saw in The Moshiach Times, a popular Chabad-Lubavitch publication for children, an exhortation to "do a mitzvah for moshiach": to do a mitzva with the specific purpose of hastening the ...
4
votes
1answer
280 views

Where does it say that one must wear two layers on their head(one of the reasons for the black hat)?

I know that a reason for wearing a black hat is because one must wear two layers covering their head (Mishna Brurah 91:5) but am wondering if that Din is based in Kabbalah?
3
votes
2answers
653 views

Source for long payos

Where is there a source for having long payos ,and if there are sources what is the oldest source.? I am talking about the extra length besides for the halachic necessity. Like behind the ears or ...
16
votes
1answer
580 views

Blessing the Children on Friday Night

I have noticed that many families (including my own) have the custom for the father to bless all the children on Friday night before kiddush. When and where did this custom originate, and by whom, ...
14
votes
3answers
339 views

Halachic Source for Women-Only Mikvaoth?

Some (actually many) Mikvaoth are designated for women's use only, generally for reasons of cleanliness. Is there Halachic literature supporting (or urging) this? (This question is not asking for ...
5
votes
2answers
240 views

Cairo Geniza Controversy

What are the arguments against using manuscripts from the Cairo Geniza? Are there any Seforim / articles that discuss this debate?
20
votes
2answers
231 views

Source of non-verse in Selichot

In Ashkenazi Selichot, the following set of verses from Tanach (patterned around the opening verb ז.כ.ר.‏ to remember) appears towards the end of the Selichot service (there may be some slight ...
12
votes
4answers
3k views

Basic laws, why is milk with meat not kosher?

I've recently read (again) the verse "לא תבשל גדי בחלב אמו", meaning, "Do not cook a young goat in its mother’s milk". How did anyone get from that, to "Don't eat meat with milk at all"? I've always ...
6
votes
2answers
195 views

How/why does kaparot work?

The ritual of kaparot [lit. atonement], which is usually done just prior to Yom Kippur (usually the day before), where one waves a chicken or an [unspecified] amount of money over one's head in a ...
6
votes
6answers
439 views

Tikkun Olam source

What is the source for the concept that Jews have to practice Tikkun Olam, and where in the classical Jewish sources is this concept defined? It seems people throw this term around a lot in the ...
5
votes
2answers
198 views

Source for not having picture taken

Is there any source, halachic or otherwise, for an aversion to having one's picture taken?
4
votes
3answers
107 views

Interpreting divine messages

It is an article of faith that Hashem directs our lives individually (hashgacha pratit), and part of that guidance includes instructions about what each person should or shouldn't be doing. If we had ...
4
votes
5answers
276 views

Connecting Shas and Halacha

What resources are available to trace the connections from the Gemara to the Halachic codifications and the reverse? For example, how can someone learning Daf Yomi find the related Halachic rulings ...
3
votes
2answers
170 views

Origin of the Escalator analogy

What is the origin of the escalator analogy of always striving for growth? I'm referring to the analogy that, in life, like a person climbing a downward escalator, if one is not constantly striving ...
2
votes
5answers
380 views

Is getting angry a biblical prohibition

Is getting angry a biblical prohibition? If so, what is the source in the Torah (five books of Moses) prohibiting getting angry (preferably something explicit)?
17
votes
3answers
262 views

What is the source that Parshas Parah is from the Torah?

I have read in many places that Parah could be a bliblical requirement to read. Why is that? Zachor makes sense (as it says so in the Torah here). Why Parah?
15
votes
3answers
405 views

Is there a source for not requiring Tevilah for the first use?

I have heard (as I'm sure many others have) that one can use a utensil one time before Tevilah. At the same time, I've heard that this is a common misconception. Is there anyone who holds that this ...