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

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4
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1answer
476 views

Can one play computer games on Chol Hamoed

I know that there is a debate among the poskim as to whether one can type on Chol Hamoed. Does anyone discuss whether one can play computer games on Chol Hamoed?
4
votes
1answer
44 views

Which Tzemach Tzedek?

When the Pitchei Teshuva (on the daf of Shulchan Aruch Yoreh Deah) quotes teshuvot of the Tzemach Tzedek, who is he quoting? Is he quoting Rabbi Menachem Mendel Schneersohn, the Tzemach Tzedek of ...
4
votes
1answer
68 views

Counting years according to the solar calendar

I once heard there is an opinion in Rishonim (maybe Gaonim?) that says we count ones years of life according to the solar calender. So for example a boy would become bar mitzvah when he would turn 13 ...
4
votes
1answer
221 views

Source of “Legitimate pleasures” quote

A quote that sometimes appears on the internet is the following: "Everyone will be called to account for all the legitimate pleasures which he or she has failed to enjoy." It is usually attributed ...
4
votes
4answers
452 views

How do we know that God does not take human form?

Christianity believes that God takes human shape in the form of Jesus, and comes down to earth as a man. Of course, Jews do not believe that God ever takes the shape of a human, but how do we know ...
4
votes
2answers
144 views

What is the source for lighting a candle for the whole year after the death of a close relative?

I am familiar with the idea of a yahrzeit candle. I have observed a custom of keeping a flame alight for the whole year (or maybe 11 months) after the death of a close relative. (When one goes out, ...
4
votes
1answer
300 views

What is the origin on metziztah b'peh?

Is metzitzah b'peh of biblical origin or was it instituted by the rabbis? What is the source for this practice?
4
votes
1answer
104 views

Source in Tosafos for playing ball on Yom Tov

I know there is a Tosafos in Beitza 12a that discusses playing ball on Yom Tov, but I remember learning another Tosafos which said something like "for children under nine it would be permitted on ...
4
votes
3answers
276 views

Source in Jewish writings for Moshiach?

What is the source in Jewish writings (Pre-Rambam) that there is a concept of a Moshiach, and his nature?
4
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3answers
2k views

Eating at a shiva house

What is the basis for some people's practice not to eat the food at a shiva house; is there a halachik basis for this, is it a minhag or perhaps just superstition?
4
votes
1answer
60 views

Source for statement that we don't know how to rebuke today

I recall hearing that someone, perhaps R' Yisroel Salanter, said that today we do not know how to respectfully give rebuke, and therefore we are all in the category of onus regarding the mitzvah of ...
4
votes
1answer
96 views

Why did R. Zera want to forget the Talmud Bavli?

I read that R. Zera fasted one hundred days to forget the Babylonian Talmud before he left Babylon to live in the Land of Israel. Why would he do this when I've understood that the Babylonian Talmud ...
4
votes
2answers
207 views

דע לפני מי אתה עומד on the ark

In some shuls it says on the ark, "Da Lifnei Mi Atah Omeid." Is there any source from which that comes?
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
4answers
163 views

Bitahon and Hishtadlut for livelihood

The Sefarim discuss (see Hobot Halevavot, Michtav MeEliyahu etc.) the idea of being Mishtadel (making an effort) for one's livelihood but believing that the Hishtadlut (effort) has absolutely nothing ...
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?
4
votes
1answer
95 views

What is a “migu”

A popular topic discussed sometimes at length in Yeshivas I would like to pose the question here with a few additional points: What is a "migu"? How is it used in Shas? What is a "classic" (or the ...
4
votes
1answer
60 views

Gemara on volunteering?

I heard that there was a Gemara to the effect of "volunteers cost more than employees because their motivation is not as good" -- or somesuch. Any ideas? Thanks.
4
votes
1answer
86 views

Vilna Gaon on Yom HaAtzmaut?

I've heard repeatedly the claim that there is a specific prediction by the Vilna Gaon regarding the dates of Yom HaAtzma'ut (5 Iyar) and Yom Yerushalayim (28 Iyar). What is the source for this claim? ...
4
votes
2answers
81 views

What were the Rambam's sources?

In the introduction to the Mishneh Torah, the Rambam indicates that his compilation of the entire Oral Torah is derived from a few key Jewish texts: ואין צריך לומר הגמרא עצמה הבבלית והירושלמית ...
4
votes
1answer
72 views

Can an autopsy be performed on a Jewish body?

Halachically can one perform an autopsy on a Jewish body? One one hand, the Talmud Sanhedrin 47a explains that the verses in Deuteronomy 21:22-23 we can learn that one must not delay a burial and ...
4
votes
1answer
136 views

Should single men not sit at corner of the table?

I heard that there some say that single men should not sit at the corner of the table, because it could lead to someone staying single forever. Is there a source for this idea?
4
votes
2answers
326 views

Is praising non-Jews actually prohibited?

The gemara Avodah Zara (20) explains that praising a non-Jew is a violation of "lo sechaneim", and this is quoted in the Rambam (Hil. Avodah Zara 10:6) and the Shulchan Aruch (Y"D 151, and Shach s.k. ...
4
votes
1answer
88 views

Is there a stated freedom to contract?

In the United States (and other countries), there is the notion of the freedom to contract. This is the idea that two people of sound mind have the right to enter into any contract with one another ...
4
votes
1answer
56 views

Origin of “May God Avenge His Blood” (הי"ד)

What is the origin (i.e earliest usages) of appending הי"ד ("May God Avenge His Blood") after the name of a murder victim.
4
votes
2answers
135 views

sources that neatness brings brocho/mazal

I heard in a daf yomi shiur on the end of Moed Katan (27a ‘Couch of Fortune’) that Jews kept an extra neat bed for brocho/mazal. One of the reasons that he gave was that in general neatness brings ...
4
votes
2answers
84 views

Kiddush, Learning and Mitzvos for dead/niftar neshamos

I seek an early source that giving Kiddush (so others will make a bracha for the zchus of the neshama) or other such actions that can positively affect the neshamos of those who have departed.
4
votes
1answer
49 views

Source for exemption of hekdesh by nizkei adam

What is the source of the פטור (exemption) of הקדש by נזקי אדם (damage to property done by a person)? Tosfos on Bava Kama 7a (continued from 6b sv שור רעהו; on 7a, beginning of narrow lines) teaches ...
4
votes
1answer
179 views

Where does the Talmud discuss the reason for Onan's death?

Genesis 38 says that instead of impregnating Tamar, Onan let his seed go to waste, and that this angered God, and therefore God killed Onan. I have a vague memory of reading somewhere in the Talmud ...
4
votes
2answers
162 views

Source for Quote about the cost of bread in the times before Moshiach?

Does anyone know where it says that in the times before moshiach, it will cost a barrel of money to buy a loaf of bread? I remember hearing that, but can't find the source. The reason I ask that is ...
4
votes
1answer
293 views

Ana B'Koach authorship and the 42 letter name of Hashem

In my Artscroll siddur it tells me that the hymn Ana B'Koach was written by the tanna, Rebbi Nechunia ben HaKana and that the first letter of each word can be used to form the 42 letter name of ...
4
votes
1answer
279 views

Have poskim written about partnership minyanim?

Are there any contemporary responsa regarding partnership minyanim, such as Shira Hadasha and Darkei Noam? Various rabbis have written against it (e.g., R. Student, R. Rothstein, R. Firmer) and it ...
4
votes
1answer
113 views

Wearing wool Tzitzis on Shabbos

Is it better to wear wool tzitzis? indicates that it is better Halachically to wear a woolen Beged with woolen Tzitzis. Recently I met a fellow who the entire week wears cotton Tzitzis, yet on Shabbos ...
4
votes
1answer
325 views

Source for story of Rashi, the King, and the Four Horsemen

There is a story (you can read the details here) about Rashi telling a King that he will conquer Yerushalaim for 3 days and return with 3 horses and 3 riders. The King returned with 4, but as they ...
4
votes
1answer
76 views

The history behind the composition and inclusion of V'lo N'tato

I'm curious about the composition and inclusion in the shabbat shacharit of the paragraph beginning ולא נתתו (v'lo n'tato). I understand the talmudic basis for the underlying idea, and how it fits in ...
4
votes
1answer
118 views

Is the idea that there is always at least one illness with an unknown cure - a Jewish idea?

I have heard many times that there will always be at least one illness that is uncurable. Is this a Jewish idea? What is its source?
4
votes
1answer
100 views

Matzah the entire week

Is it the Vilna Gaon who maintains that it is a mitzvah to eat matzah (to eat matzah, in addition to abstaining from chametz) every day and night during the week of Passover, or somebody else? The ...
4
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1answer
155 views

g'mara about David's conception

Where's the g'mara about Yishay's divorce (or was it separation?) and David's conception, please?
4
votes
1answer
36 views

What's the source for the phrase in Krias Shema al HaMitah: : …בְּשֵׁם יְיָ אֱלֹקֵי יִשְׂרָאֵל and to recite it 3x?

What's the source for the actual phrase that is cited in Krias Shema al HaMitah: בְּשֵׁם יְיָ אֱלֹקֵי יִשְׂרָאֵל: מִימִינִי מִיכָאֵל וּמִשְּׂמֹאלִי גַבְרִיאֵל וּמִלְּפָנַי אוּרִיאֵל וּמֵאֲחוֹרַי ...
4
votes
1answer
35 views

Was the rock the Moshe hit in Shemos 17 the be'er miriam

Rashi in Bamidbar 20:2 notes that until Miriam died the be'er [literally well] gave water. Was this be'er the rock which Moshe hit in Shemos 17? Or was it a well, and if so where is the first source ...
4
votes
1answer
51 views

No longer prostrating after tefillah - sources?

Inspired by this question, this question and this answer, what I am looking for is an early source that makes reference to people no longer prostrating themselves after tefillah. If the source gives a ...
4
votes
1answer
124 views

Where Does the Talmud Teach Not to Learn Halacha From Observation of Teachers?

Back when I was learning Daf Yomi, I ran into an interesting lesson I'm finding difficult to find again. It was a teaching that one should learn halacha from your rebbe's teachings and not through ...
4
votes
2answers
253 views

Is the Tower of Babel discussed in other Jewish texts?

Genesis Chapter 11 includes a few short verses about the Tower of Babel: 1 And the whole earth was of one language and of one speech. 2 And it came to pass, as they journeyed east, that they ...
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2answers
140 views

Gezeira of Rabbeinu Gershom History

Has the original text of the Gazeira of Rabbeinu Gershom been lost. If so when? Who are the earliest sources stating such?
4
votes
0answers
50 views

Reward for not talking during davening

The Sefer HaPanim (Daf 11) says, “One who is careful not to converse during prayers is bound to live a long life and have a pleasant old age." 1) Is there anywhere in the Torah, Gemara or Sefarim ...
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votes
0answers
71 views

Different endings of Yishtabach

I have heard at least four nuschaos (liturgies) for the very end of Yishtabach between habocheir b'shirei zimrah (who chooses musical songs of praise) and chai/chei* haolamim (life/life-giver of the ...
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votes
0answers
60 views

Choreography of Kaddish

I have seen a number of different customs of when people bow or sway or bob or whatnot during Kaddish. Some of the people I have witnessed have been very knowledgeable, and I assume they weren't just ...
4
votes
0answers
31 views

Kallah and the Power to give Brachas [duplicate]

In a shiur given by Rabbi Frand, he tells over a story where a Kallah came into a hospital on the day of her wedding to give Brachas to the children for a Kallah, on the day of her wedding, has the ...
4
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0answers
117 views

Height of havdalah candle = height of spouse?

I have seen havdalah ceremonies where a unmarried person is charged with holding the havdalah candle and is told to hold it at the height that s/he would want their spouse to be. What is the source ...
4
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0answers
44 views

Source for medrash that Klal Yisroel counted the omer when they came out of Mitzraim

The sefer Tur Bareket (OC 489 1) brought here quotes a medrash that Moshe Rabbeinu told Klal Yisroel to count 50 days towards matan torah. Do any of our readers know the exact source in the medrash of ...