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

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6
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1answer
92 views

Why recite the fourth Berachah of Bentching in a case of doubt?

If someone is in doubt whether or not to Bentch, we take the strict approach and require the person to Bentch, as it is a Biblical requirement (see here), unlike most Berachoth, for which the rule is ...
6
votes
1answer
199 views

Custom of not eating by other people on Pesach

There is a custom that many have to not eat by other peoples houses on Pesach. Seemingly it's even if they have the same chumras or perhaps even more chumras (what I've learned over time is not ...
6
votes
2answers
223 views

Exact model of the Beis Hamikdash?

There is a "classic" model of the Beis Hamikdash (I think it's from the HolyLand model). Are there any sources for the decisions taken in the model (for example, what components were done based on ...
6
votes
1answer
170 views

No mitzvah to wear tefillin every day?

I heard that the Bet HaLevi and the Peri Megadim hold that there is no Mitzva for a person to don Tefilin everyday. Can someone source these opinions and explain exactly what they are meaning to say?
6
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1answer
103 views

Decorative food plating on Shabbath

This question asks about using an ice cream scoop on Shabbath, and an internet forum linked in the question has a discussion about the permissibility of decorative plating of food generally. According ...
6
votes
1answer
320 views

What is the danger in cutting fingernails in order?

The Ramo (OH 260:1) writes that one should not cut their fingernails in order; rather he should cut them by skipping neighboring nails and cycling through all the fingers. וכשנוטל צפרניו לא יטול ...
6
votes
3answers
142 views

Custom of Rov speaking before Krias HaTorah on Shabbos

I've been in a number of shuls where the Rov of the shul will get up before Krias HaTorah on Shabbos and say some sort of "drasha". Sometimes it was connected to the parsha or inyunei d'yoma (i.e. ...
6
votes
0answers
125 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 ...
6
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0answers
81 views

“Nahhat Ruahh l'Yotzro” source

At the end of מוסף לשבת in דרכי אבות השלם (p. 375), a quotation is written in the name of רבי יהודה: אמר רבי יהודה: אשרי מי שעמלו בתורה ועושה נחת רוח ליוצרו Can anyone help me find the exact ...
6
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0answers
105 views

What is the source of the expression המבין יבין?

The Forward writer Philologos in his most recent column claimed that the earliest uses of the expression והמבין יבין are found in the Ra'avad and in the Radak. Based on the fact that both these ...
6
votes
0answers
100 views

Source for Categorization of Matter

What is the source for the idea that all matter is either domem (lifeless), tzomeach (plant), chai (animal), or medaber (speaker)? I sometimes find this quoted places (in articles and divrei Torah), ...
6
votes
2answers
200 views

Is there any source for saying the first possuk of Shema quietly?

The Rema in OC 61(26) says the custom is to say the first possuk of the shema aloud. In this question Sh'ma aloud but amida quietly Gershon Gold said that Shema is said aloud in unison and msh210 ...
5
votes
3answers
170 views

List of people in Tanach

Can I find anywhere a comprehensive list of every single person that is mentioned in Tanach. Including somewhat "biographical" information, who they were, family, what they did, how they fit into ...
5
votes
3answers
391 views

Source of Burning Lulav with Chometz

What is the source of the custom to keep the Lulav untill Erev Pesach and burn it with the Chometz?
5
votes
2answers
209 views

Source of shabbat evening kiddush text?

The beginning of the shabbat evening kiddush (vayehi erev, vayehi boker, yom hashishi...) is from Bereshit, 1:31 ff. Where does the second part (khi hu yom tehilah lemikraei kodesh...) come from? Is ...
5
votes
1answer
151 views

Did the Terumas haDeshen write a challah recipe?

Reading this article about challah-making, I noticed the following: Using the starter, I tried the Rich Sourdough Barches recipe from Inside the Jewish Bakery, which the authors say is adapted ...
5
votes
2answers
106 views

Metzudat Tzion on the Torah

Was there a Metzudat Tzion written on the Torah? If so, does anyone know if it is available online or for sale? I always loved this commentary as it explained the hard words on the Nach.
5
votes
2answers
137 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 ...
5
votes
3answers
380 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 ...
5
votes
2answers
142 views

What is a source that allows one to treat one's house as all within four amos?

I am after a source that allows one to treat one's house as all within four amos l'chatchila, with respect to nagel vasser (hand washing in the morning).
5
votes
4answers
200 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 ...
5
votes
2answers
120 views

Ari Zal and Sefira

Many people do not take a hair cut until the end of Sefira (including Lag B'Omer) because of a position of the Ari Zal. Where is the Ari Zal? What is the source for this? Did the strigency of the Ari ...
5
votes
1answer
53 views

What is the source for Mesirath Nefesh being a virtue?

Mesirath Nefesh is widely considered a virtue. It is treated by Musar-givers throughout the world as though it is the most important virtue after fear of Heaven. But what is it based on? There are ...
5
votes
3answers
101 views

Source of Midrash regarding Yaakov's saying Shema

There is a famous Rashi in Parashat Vayigash (46:29) where Rashi explains that Yaakov didn't cry on Yosef's shoulders because he was reciting Shema. He cryptically quotes this in the name of ...
5
votes
1answer
80 views

Is there any concept of “troubling” G-d?

Is there any idea mentioned on Judaism of not wanting to "trouble" G-d with something too trivial? Obviously, G-d is infinite, and it's no more trouble for Him to do a thousand things than it is to do ...
5
votes
2answers
177 views

Jews vs gentiles: disputes

Recently I got a pleasureful reading of the Ramban's dispute. I think it a great source for "דע מה להשיב" (know what to answer to heretics). I'm sure there were similar disputes by other great ...
5
votes
1answer
75 views

Removing Yarmulka last when undressing (source)

I have noticed that some people remove their Yarmulka last when undressing and wear it first when dressing. Is this custom mentioned anywhere?
5
votes
1answer
220 views

Whence is the idea that the deceased is a meilitz yosher?

At funerals I have often heard it said that the deceased should be a meilitz yosher (one who relates rectitude). Where does this idea come from?
5
votes
1answer
70 views

Was the tana Rebbi Meir blind?

I have heard that the name Meir (lit:enlightening) is actually a "lashon naki" because he was actually blind. Similar to "sagi nahor". Is there any source for this notion that Rebbi Meir was blind?
5
votes
1answer
124 views

Why do we sit in the sukkah in the autumn?

I remember hearing at some point that there's a disagreement between the Ashkenazi and Sefardi rishonim regarding why we sit in the sukkah in the autumn: Ashkenaz - Because we love God, so we go out ...
5
votes
2answers
100 views

Should the shaliach tzibbur wear a talis to say the 13 middos ?

The Gemoro in Rosh Hashono 17b says that HKB”H put on a talis like a shaliach tzibbur and taught Moshe the 13 middos and said whenever Israel sins they should perform before Me according to this ...
5
votes
1answer
218 views

Sherlock Holmes-ian deduction in the Talmud

I remember learning a story in the Talmud (I think) and am trying to find the source. I'm a little fuzzy on the details, but this is what I remember. There was a Talmudic Rabbi who was sold into ...
5
votes
3answers
292 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 ...
5
votes
1answer
100 views

Source for how Agag had a child after being captured

Many years ago when I learned the story of King Shaul and Agag I recall learning that the Amalekites were master sorcerers and that the way King Agag was able to perpetuate his line was by cohabiting ...
5
votes
1answer
122 views

Aristotle eating Aiver Min HaChai

I heard there is a Rambam that mentions that Aristotle ate Aiver Min HaChai. I am looking for both the source in the Rambam and any earlier sources that could have been the basis for this.
5
votes
1answer
62 views

From where do we learn that strangulation is the default execution method?

I've seen mention in various places, including a quick search of Bavli Sanhedrin, that when the torah doesn't specify a method of execution in a capital case, the method is strangulation. I see a lot ...
5
votes
3answers
216 views

Are there forms of Jewish mysticism outside of kabbalah?

Is kabbalah the one and only form (source?) of Jewish mysticism?
5
votes
1answer
121 views

Women and Tefillah - per the Rav

I remember a long time ago hearing that the Rav (Rabbi Joseph B. Soloveitchik (1903–1993)) held that women should pray three times a day. Can anyone verify this, and what is the reason/source ...
5
votes
1answer
50 views

Chafez Chayim checked copies of (which) books?

I've heard that the Chafetz Chayim inspected each page of each printed copy of the Mishna B'rura to be sure that it was printed correctly (with no large ink splotches or the like). Is there a ...
5
votes
2answers
165 views

Science of the Rishonim on “celestial spheres”

In the writings of the Rishonim, it is not uncommon to see explanations of pesukim or of aggadic concepts using the "celestial spheres" model of the universe. The Rambam in particular uses the idea ...
5
votes
3answers
96 views

Amailut (trying hard/ toiling) to learn Torah

What's the source for amailut (trying hard/ toiling) to learn Torah? Is there any benefit to try learning Torah on your own without help, when you can learn Torah through asking others and looking ...
5
votes
1answer
60 views

“For Zion's sake” - Where in the liturgy?

Is Isaiah 62:1 found anywhere in the liturgy? I seem to remember a reference or two in Selichot, but I can't find it there now, nor can I find it anywhere else.
5
votes
1answer
175 views

Customs surrounding fasting when a sefer torah falls to the floor?

Based on this question I would like to know what the earliest source for fasting when a sefer torah falls comes from? Is is true that if a person is in the room but turns away so as not to see it ...
5
votes
1answer
190 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 ...
5
votes
2answers
259 views

Is there a source that the Messiah can die and return?

Is there a source in Judaism that indicates that Moshiach (Ben David, not Ben Yosef) will die before having fulfilled his role and then return to posthumously achieve it?
5
votes
1answer
45 views

Who wrote the “Seder Vehilchos Korban pesach rishon beketzarah”

In Pesachim 57b (right before the 5th chapter) there is a page containing a summery of laws pertaining to the Korban Pesach. Who wrote it?
5
votes
1answer
96 views

Where was it first said that “The generation is diminishing and diminishing”? (הדור הולך ופוחת)

in Hebrew we have an adage that says “הדור הולך ופוחת” ("Hador holekh wepocheth"), meaning “the generation is getting more and more diminished", which may have meant that there are fewer and fewer new ...
5
votes
1answer
94 views

Where does the concept of “shirayim” come from?

Please explain the concept of shirayim (literally, leftovers) wherein the followers of a chassidic Rebbe will receive portions of his food to it, these leftovers are considered holy or special in some ...
5
votes
1answer
141 views

(Seeking Original Source in Yechave Daas ) Limiting instances of doing something 3 times becoming a neder

According to Harav Musafi Shelit"a (Q&A 74259) (and I'm sure earlier sources), if you do a "Hanhaga Tova - good deed" three times you need Hatarat Nedarim. I believe Harav Ovadia Shelit"a in his ...
5
votes
1answer
229 views

How much must be eaten from the lechem mishneh

Inspired by following 2 questions: Not eating from the Lechem Mishnah Challah Loaves on Shabbat have a minimum size? When eating a Shabbos Seudah how much must the ones that are being yotzee from ...