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18 votes
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Why does Wednesday's shir shel yom include part of the next perek?

Moreshet.co.il reports: אך האריז"ל הנהיג להוסיף שלשה פסוקים ראשונים ממזמור צ"ה, "לכו נרננה" וכו', כדי לא לסיים בפורענות - "יצמיתם ה' אלקינו", כעין מה שאמרו חז"ל לגבי הפסקה בקריאת התורה: "ואין ...
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18 votes

How did Jacob manage to have 12 children in 7 years?

The Rashbam to Bereishis 43:33 writes that not only were the 6 sons of Leah born in 7 years, but also all of the other sons of Yaakov (with the obvious exception of Binyamin, who is explicitly ...
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15 votes

Holidays Beginning at sundown of the previous day

For the entirety of Jewish History, Judaism has kept to a day that begins at sunset on the previous 'secular/non-Jewish date'. Therefore, all meals eaten after sundown would be considered to already ...
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14 votes

Where does the notion that the *entire* matza process must be done in under 18 minutes come from?

This does not include the time in the oven, but the notion that the entire process until the dough goes into the oven must be completed within 18 minutes is based on actual opinions on the books. I ...
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12 votes
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Is there a constant Mitzvah for women?

There are six commandments applicable to males at all times: Know there is God. Don't believe in other gods. Belief in unity of God. Love God. Fear God. Don't be lead astray by your eyes and heart. ...
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11 votes
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Brewing fresh coffee for Shabbos with a time clock

The Sefer Yerushas Pleita (Siman 16) brings from a sefer called Matta Yerushalayim that quotes in the name of the Chasam Sofer that it was common for people to set up a fire on Erev Shabbos in a way ...
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10 votes

Holidays Beginning at sundown of the previous day

Holidays don't begin before the date they are on. They are only on the date they are on. That date starts and ends at sundown. Many holiday rituals occur after sundown at the beginning of the holiday. ...
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9 votes

Referencing Iron before the Iron Age

In Tanach the word Barzel - ברזל appears 44 times. Per Wikipedia The Iron Age in the Ancient Near East is believed to have begun with the discovery of iron smelting and smithing techniques in ...
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9 votes
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Davening a long shemoneh esrei and missing ameins

Qitzur Shulhhan Arukh - Yalqut Yosef, Siman 109:6 states: ומי שמאריך בתפלתו באופן שהצבור מסיימים להתפלל ערבית, והוא עדיין בתפלתו, ובליל ח' לחודש שהצבור מברך ברכת הלבנה, מפסיד אמירת הברכה ברוב עם, ...
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9 votes

Is it true that it is 'Hiddur Mitzvah' to have the Hanukkah lights stay lit for longer?

The Mishna B'rura (672:6, citing Magein Avraham 672:3) writes: If he put a lot of oil so that the flame will last longer, there is no mitzva in this. But with wax candles, there is a ...
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9 votes

What are "18 minute" matzot?

In current matzah parlance, “18-minute matzah” means that the entire matzah line is cleaned every 18 minutes https://oukosher.org/passover/articles/getting-to-know-your-matzah/
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8 votes

18 minute Matzah?

The 18 minute mark is almost certainly a mistake. The source of this time limit is from Pesaḥim 46a: Mishna: [Regarding] ‘deaf’ dough, if there is [a dough] similar to it which has become leaven, ...
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8 votes
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In an average shul, how long before sunset does a combined weekday Mincha/Maariv service start?

The proprietors of goDaven were kind enough to supply me, for the purposes of answering this question, with their table of 5,960 mincha and/or maariv services. I used a Perl script to extract 1,046 ...
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8 votes
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What are you supposed to do on Tisha baAv?

There are a variety of things that people do on Tisha B'Av. Many people spend most of the morning reading and discussing the Kinnos. It is also permitted and widespread to learn certain bits of Torah ...
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8 votes
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Can you build a succah on Sukkot?

This is a Machloket in the Talmud (Sukkah 27b, see OC 637) and the Halacha follows the Sages that one can start building a Sukkah on Chol HaMoed. Even R Eliezer who argued there agreed that if one's ...
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7 votes

Moshe's age and the timeline of the exodus

The Da'as Zkeinim (and the Chizkuni) at the beginning of Parshas Noach addresses this issue in a different context - The posuk says תמים by Noach, and the Midrash says (Bereishis Rabba 30:8) that ...
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7 votes

Brewing fresh coffee for Shabbos with a time clock

In Rabbi Eider's Halachos of Shabbos page 322 footnote 657, he quotes a list of Rabbis who say this is assur. In order of his quoting them: Rav Y. Henkin in Euros Yisroel page 122. Tzitz Eliezer ...
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7 votes
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When Tana"ch uses the phrase "until today" what does it mean?

M'tzudas David, commenting the first time the phrase appears in Nach, writes: It means to imply "forever", as anyone reading this verse, in his own time, will say "until this day". This is a ...
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7 votes

Rav Moshe and Giving Your Time for Charity

Following @Yirmeyahu's lead I found my copy of the Eye of the Needle with the full copy of the article you are looking for. I scanned it below. See end of page 3 and page 4. It is not a straight ...
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7 votes

Latest time to say Maariv

One can pray until dawn (alot hashahar), ideally (lechathila) one should do so before midnight (halachic midnight i.e., hatzot) (Kitzur Shulchan Aruch 70:2). Chabad.org explains The time for ...
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7 votes
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Is there a formal prohibition of stealing time from someone?

I have personally heard from Harav Chaim Kanievsky shlit"a that the term "גזל זמן" (stealing time) [and גזל שינה - stealing sleep] is a halachic misnomer, because stealing time [or sleep] is not ...
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7 votes

How many ‘Watches’ were there in an ancient Hebrew day?

Tractate Brachos of Talmud of Babylon 3b says this is a dispute between 2 tanaim (Rabbis in the period of the Mishna just under 2 millenia ago) whether there are 3 or 4 watches in the night: תנו ...
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6 votes

Waiting six hours when chicken became meat

As documented with sources here, there never was a point in time when the Rabbis decree that chicken is to be considered as meat. The meat-to-milk 6 hours waiting period was a gradual movement ...
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6 votes
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If kings get up at 3 hours past sunrise, wouldn't they need some extra time to say Shma?

NOTE: both of these are only partial answers; the 1st may be against the Rashba and the 2nd is disputed First Answer The simplest answer might be that the times of getting up and going to sleep are ...
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6 votes
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Blessings on Birthdays

R. Elazar of Kozhnitz is cited as finding an allusion to the idea that one receives power of blessing (requesting) on their birthday in the verse (Ps. 2:7-8): אֲסַפְּרָ֗ה אֶֽ֫ל חֹ֥ק יְײ אָמַ֘ר אֵלַ֥י ...
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  • 11.7k
6 votes

Is there a "5 second rule" for foods becoming non-Kosher?

The Chamudei Daniel has the famous opinion that for things that the Shulchan Aruch says "it becomes not kosher immediately", that means "if you don't pull them out immediately." More like a 2-second ...
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6 votes

If you travel back in time, would you be obligated in Mitzvot?

Yes, you are considered an adult. (Sources in this answer come from "Bar Mitzvah: Maturity of Body or Mind," by R' Yehoshua Pfeffer. I recommend reading the whole essay for a nice overview of how we ...
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6 votes
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What is the deadline for yibbum?

Indeed, the woman (the yevama) cannot marry out of the family before either Yibbum or Chalitza (Devarim 25:5, Rambam Negative Command #357). The brother (the yavam) can in principle take as long as ...
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  • 95.2k
6 votes

Adjusting timers on Shabbat

I found this article that answers my question: R’ Moshe Feinstein (Igros Moshe OC 4:60) writes that one may only use timers on Shabbos for one’s lights. Firstly, timers are akin to instructing a ...
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