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ShabbosBuy "Shabbos" on an mp3 CD! (All 55 classes for just $27.50+S&H!)Rav Dovid gives a daily halacha at the Wall Street Synagogue in Lower Manhattan. This series covers the 39 Melachos of Shabbos, Shabbos prayers, and more. |
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| 3 Sivan 5768 | listen |
Havdalah following Yom Tov
(15:13)
We make havdalah following Yom Tov, but we don't include the candle or spices. Why?
Sources: OC 491:1; MB 491:1-2; OC 298:1; MB 298:1
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| 24 Iyar 5768 | listen |
The Age of Chinuch; the Age of Understanding
(15:16)
Chinuch for mitzvot lo ta'aseh begins as soon as the child understands "no." We protect our children from physical dangers; should we not be equally careful of spiritual dangers?
Sources: OC 343:1; MB 343:3,7-8
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| 23 Iyar 5768 | listen |
Allowing a Child to Violate an Issur
(15:41)
A child picks up a forbidden food or begins to perform a forbidden act. Need we stop the child? Reprimand him or her? What if it isn't your child?
Sources: OC 343:1; MB 343:1-3
Dedicated for a refuah shleimah for Chaya Sarah Dinah bas Alta Bas Sheva
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| 22 Iyar 5768 | listen |
Giving a Child an Issur
(15:22)
Under no (ordinary) circumstances can you hand a child a forbidden food or an opportunity to violate a Torah prohibition.
Sources: OC 343:1; MB 343:4-6
L'ilui nishmat Zissel Devorah bas Avraham Abish on the occasion of her yahrzeit.
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| 18 Iyar 5768 | listen |
Chinuch: Giving a Child Forbidden Food
(14:48)
In some situations, we need not prevent a child from eating something when he shouldn't.
Sources: OC 269:1; MB 269:1-3
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| 1 Iyar 5768 | listen |
Reciting Kiddush Lavana on Motzei Shabbos
(15:02)
The ideal time for Kiddush Lavana is Motzei Shabbos -- within reason. Also: a brief summary of the works of Rav Yosef Caro, plus a bit of angeology.
Sources: OC 426:2-3; MB 426:4-6,18
L'ilui nishmat Moshe ben Hirsh on the occasion of his yahrzeit.
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| 29 Shevat 5768 | listen |
Borrer (12): Broken Matzos
(4:45)
Choosing whole matzos from among broken matzos is a problem of borrer that presents itself every Pesach.
Sources: Ch"A Hil. Shabbos 16:14
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| 28 Shevat 5768 | listen |
Borrer (11): Waiter, there's a fly in my soup!
(16:49)
Dealing with common situations of borrer that occur during a meal: removing waste from food and peeling.
Sources: Ch"A Hil. Shabbos 16:12-13,15
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| 24 Shevat 5768 | listen |
Borrer (10): Curdling Milk
(12:53)
According to the Chayei Adam, separating the parts of milk -- curds, whey, cream -- is all considered borrer.
Sources: Ch"A Hil. Shabbos 16:11
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| 23 Shevat 5768 | listen |
Borrer (9): Straining Eggs
(16:50)
In yesterday's shiur (Borrer 8), we struggled to understand the confusing case of separating egg yolk and white by way of a mustard strainer. In today's shiur, Rav Dovid shares his chidushim that make sense of this difficult case.
Sources: Ch"A Hil. Shabbos 16:10; Shabbat 20:2; Rav Ovadia M'Bartenura, ad loc.; Shabbos 139b-140a; Rashi, ad loc.; OC 319:15; MB 319:58; Shaar HaTziun 319:47,49
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| 22 Shevat 5768 | listen |
Borrer (8): Strainers and Filters
(15:31)
Strainers and filters can be used on shabbos in some circumstances but not others. This is an area where there is a very fine line between mutar l'chatchila and chayav chatas, and most of us often don't understand the differences.
Sources: Ch"A Hil. Shabbos 16:10
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| 21 Shevat 5768 | listen |
Borrer (7): Separating a Liquid from Sediment
(12:07)
Is there a permitted way to pour off a liquid from unwanted sediment or to remove fat from gravy on shabbos? How do you avoid borrer in such cases?
Sources: Ch"A Hil. Shabbos 16:9
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| 11 Shevat 5768 | listen |
Borrer (6): Filtering Liquids with a Strainer
(14:37)
Even though it is a utensil made for separating, under some circumstances an actual strainer may be used on Shabbos.
Sources: Ch"A Hil. Shabbos 16:8
Dedicated l'ilui nishmat Aharon ben Meir on the occasion of his yahrzeit.
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| 10 Shevat 5768 | listen |
Borrer / Sorting (5): Filtering Drinkable Liquids
(10:45)
Some liquids may be strained with a handkerchief without violating borrer, but straining others is an issur d'oraita.
Sources: Ch"A Hil. Shabbos 16:7
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| 9 Shevat 5768 | listen |
Borrer / Sorting (4): Separating Two Foods
(15:30)
Borrer also applies when separating between two foods when one is desirable and one is not.
Sources: Ch"A Hil. Shabbos 16:5
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| 8 Shevat 5768 | listen |
Borrer / Selecting (3): Separating Bad Fruits
(14:50)
Applying the rules of borrer to a common shabbos situation: separating good fruit from bad, or wilted lettuce from crispy.
Sources: Ch"A Hil. Shabbos 16:4,6
Given as a zechut for a refuah shleima for Tamar bat Sigalit.
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| 3 Shevat 5768 | listen |
Borrer / Selecting (2): Conditions of Borrer
(12:55)
For borrer to be permissible, three conditions must be met: the separation must be done by hand, by taking good from bad, and for immediate use. The Chayei Adam adds another condition: taking the lesser quantity from the greater.
Sources: Ch"A Hil. Shabbos 16:1
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| 2 Shevat 5768 | listen |
Zoreh / Winnowing; Borrer / Selecting: Introduction
(15:39)
The malacha of zoreh (winnowing) has very few practical implications today. Borrer (selecting or sorting) is among the most difficult malachot to apply because it is so subtle.
Sources: Ch"A Hil. Shabbos 15; Shabb. 74a
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| 29 Tevet 5768 | listen |
Accidental Inclusion of Shabbos or Rosh Chodesh in a Weekday Amidah
(14:57)
What if you accidentally include ya'aleh v'yavo in a weekday amidah?
Sources: OC 108:12; MB 108:37-38
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| 25 Tevet 5768 | listen |
Making Up for Mistakes in the Amidah
(10:21)
We previously learned that you can make up for a missed shabbos amidah in the subsequent weekday amidah. But what if you mistakenly davened a weekday amidah on shabbos -- can you correct that error in a subsequent weekday amidah?
Sources: OC 108:11; MB 108:32-33
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| 18 Kislev 5768 | listen |
Dosh / Threshing (Part 10): Sponges and Absorbed Liquids
(15:49)
If squeezing liquid from a cloth is a form of dosh, sponges cannot be used on shabbos. How do we wash dishes? Clean a counter of table? Also: straining.
Sources: Ch"A Hil. Shabbos 14:13,15-16
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| 17 Kislev 5768 | listen |
Dosh / Threshing (Part 9): Melting Solids; Cleaning up Spills
(15:53)
Applications of dosh related to melting include cracking ice, melting butter, and dissolving sugar. Also: cleaning up spills.
Sources: Ch"A Hil. Shabbos 14:11-12
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| 16 Kislev 5768 | listen |
Dosh / Threshing (Part 8): Squeezing Honey from Honeycomb
(9:54)
Beehives are categorized as something that "grows from the ground," which makes honeycomb subject to dosh. This shiur details the halachot involved. As usual, we extract principles that are applicable elsewhere in dosh.
Sources: Ch"A Hil. Shabbos 14:10
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| 11 Kislev 5768 | listen |
Dosh / Threshing (Part 7): Juice that Seeps from Grapes on Shabbos
(13:42)
The juice that seeps from grapes on shabbos is rabbinically prohibited. However, you can soak the grapes in existing wine and enjoy the new wine that comes out. NOTE: This lecture mentions a chasid who drank Southern Comfort. That story goes back to the 1980s; Southern Comfort is not considered kosher today due to wine-based additives.
Sources: Ch"A Hil. Shabbos 14:14
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| 10 Kislev 5768 | listen |
Dosh / Threshing (Part 6): Nursing
(13:24)
Nursing is obviously permissible on Shabbos in spite of the dosh issues it presents. How are those issues handled when they come up? Also: the reason why cows are considered as growing from the ground; general parameters of pikuach nefesh as illustrated by several actual cases.
Sources: Ch"A Hil. Shabbos 14:9
Dedicated as a zechut for Tzipporah Feiga bas Chana Breina that she should have the privilege of raising children in a life of Torah.
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| 9 Kislev 5768 | listen |
Dosh / Threshing (Part 5): Milking a Cow
(13:50)
Cows and other animals are considered as growing from the ground, and this means that milking a cow is considered to be removing food (milk) from its natural container (cow). What are the parameters of dosh in this context?
Sources: Ch"A Hil. Shabbos 14:8
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| 5 Kislev 5768 | listen |
Dosh / Threshing (Part 4): Squeezing Out Liquids Absorbed in Foods
(12:24)
Liquids absorbed in food, like oil in a fried food, have a different status from liquids naturally in food or even brine in pickles.
Sources: Ch"A Hil. Shabbos 14:6-7
Dedicated to Yechiel Isser ben Tuvia on the occasion of his yahrzeit.
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| 4 Kislev 5768 | listen |
Dosh / Threshing (Part 3): Squeezing Lemons and Pickles
(15:40)
Is there a permitted way to squeeze lemon onto fish or into tea? To make lemonade? Can I squeeze the excess brine from my pickles?
Sources: Ch"A Hil. Shabbos 14:4-5
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| 3 Kislev 5768 | listen |
Dosh / Threshing (Part 2): Squeezing Fruits for Juice
(13:13)
The first toldah of dosh is squeezing fruits for juice. How is this dosh? It is the process of removing the desired part (the juice) from its natural container (the fruit).
Sources: Ch"A Hil. Shabbos 14:2-3
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| 2 Kislev 5768 | listen |
Dosh / Threshing -- Introduction
(10:57)
The av malacha, principles, and several examples of dosh (threshing).
Sources: Ch"A Hil. Shabbos 14:1
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| 28 Cheshvan 5768 | listen |
Birkat HaMazon on Motzei Shabbos / Erev Rosh Chodesh
(15:10)
Birkat HaMazon on shabbos when Rosh Chodesh falls on Sunday (part 2). Do we include r'tzei for shabbos, Ya'aleh v'Yavo for Rosh Chodesh, or both?
Sources: OC 188:10; MB 188:33-34
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| 27 Cheshvan 5768 | listen |
Rosh Chodesh on Sunday (Part 1)
(8:33)
When Rosh Chodesh falls on Sunday, there is a special haftara reading. Also: Birkat HaMazon on shabbos when Rosh Chodesh falls on Sunday (part 1).
Sources: OC 425:2; MB 425:9; OC 188:10; MB 188:32
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| 30 Tishrei 5768 | listen |
Rosh Chodesh on Shabbos (Part 2)
(6:57)
Why was the Haftara for Rosh Chodesh on Shabbos chosen?
Sources: OC 625:1; MB 625:6-8; Isa. 66:23
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| 29 Tishrei 5768 | listen |
Rosh Chodesh on Shabbos (Part 1)
(9:03)
When Rosh Chodesh falls on Shabbos we add Ya'aleh v'Yavo, read a special Rosh Chodesh Maftir, and recite a special haftara.
Sources: OC 625:1; MB 625:1-5
Dedicated in memory of Shnuer Zalman ben Shlomo on the occasion of his yahrzeit.
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| 23 Av 5767 | listen |
M'amer: Part 2 -- Other Forms of Gathering
(12:42)
Salt, dirt, stones, pebbles, Cheerios necklaces, eggs, and seaweed.
Sources: Ch"A Hil. Shabbos 13:2-3
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| 22 Av 5767 | listen |
M'amer / Gathering: Part 1
(11:55)
The principle and Av Melacha of m'amer along with some basic examples.
Sources: Ch"A Hil. Shabbos 13:1
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| 27 Tamuz 5767 | listen |
Kotzer: Part 5 -- Gezeirot to Distance Us from Harvesting
(13:56)
Chazal imposed a number of gezeirot to distance us from harvesting. Also: Understanding the reason(s) for gezeirot and more on Rav Dovid's favorite halacha.
Sources: Ch"A Hil. Shabbos 12:7-10
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| 24 Tamuz 5767 | listen |
Kotzer: Part 4 -- Trees, Stumps, and Grasses
(13:31)
The details of the various gezeiros chazal made regarding trees, stumps, and grasses. Also: Rav Dovid's absolute favorite halacha!
Sources: Ch"A Hil. Shabbos 12:6
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| 23 Tamuz 5767 | listen |
Kotzer: Part 3 -- Vegetables and Spices Stored in Dirt; Introduction to Trees
(14:20)
The halachos surrounding removing vegetables from dirt. Also: Using a tree; smelling fuits and flowers.
Sources: Ch"A Hil. Shabbos 12:3-5
Dedicated l'ilui nishmat Chaim ben Micha'el on the occasion of his yahrzeit.
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| 20 Tamuz 5767 | listen |
Kotzer / Harvesting: Part 2 -- Potted Plants and Flowers
(16:23)
All potted plants are muktzeh, but cut flowers are not. Kotzer and zoreah are often the inverse of each other.
Sources: Ch"A Hil. Shabbos 12:2
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| 19 Tamuz 5767 | listen |
Zorea: Part 4 -- Potted Plants; Introduction to Kotzer / Harvesting
(14:25)
Why are potted plants are muktzeh on shabbos? Also: Introduction to the malacha of kotzer and its relationship with zoreah.
Sources: Ch"A Hil. Shabbos 11:4; 12:1
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| 16 Tamuz 5767 | listen |
Zorea: Part 3 -- Pruning; Re-Planting a Potted Plant
(12:02)
Third and fourth aspects of planting: pruning to promote new growth; re-planting an existing plant in the ground.
Sources: Ch"A Hil. Shabbos 11:4-5
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| 13 Tamuz 5767 | listen |
Zorea / Planting: Part 2 -- Seeding
(14:50)
A second aspect of planting: placing seeds or stalks into water or on the ground. Also: dealing with cut flowers on shabbos; watermelon seeds; soaking grains and beans.
Sources: Ch"A Hil. Shabbos 11:2-3
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| 12 Tamuz 5767 | listen |
Zorea / Planting: Part 1 -- Watering
(14:24)
The principle and av malacha of planting, including a discussion of psik reisha and its application.
Sources: Ch"A Hil. Shabbos 11:1
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| 11 Tamuz 5767 | listen |
Choresh / Plowing
(17:29)
The malacha of plowing includes: plowing; digging; fertilizer; mulch; dragging a heavy bench or chair; sweeping; playing marbles or soccer; pushing a carriage; sprinkling sand or salt on ice.
Sources: Ch"A Hil. Shabbos 10:1-3
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| 10 Tamuz 5767 | listen |
The "Forty Minus One" Malachos and Tzitzit
(13:42)
Why do chazal enumerate the malachos as "forty minus one" rather than thirty-nine? The full list of thirty-nine malachos and an illuminating explanation of their division into categories that indicates a relationship between the malachos and tzitzit.
Sources: Num. 15:32-41; Ch"A Hil. Shabbos 9:1
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| 9 Tamuz 5767 | listen |
Introduction to the 39 Malachos
(15:47)
Where does the concept of the thirty-nine forbidden forms of work come from? How do we know there are thirty-nine, and how do we know what they are?
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| 3 Tamuz 5767 | listen |
Two People Doing a Malacha Together
(15:34)
When two people do a malacha together, the given act may be chayav, patur, or mutar -- it depends on the exact circumstances. The details of "shnayim she-asu".
Sources: MT Shabbos 1:15-17
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| 2 Tamuz 5767 | listen |
Intentionality (Part 3): Mitasek; Also: Shiurim for Malacha
(13:21)
Complete lack of intentionality. Also: every malacha has a minimal shiur (measure) to be chayav.
Sources: MT Shabbos 1:11-14,19
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| 28 Sivan 5767 | listen |
Intentionality (Part 2): Lo Tzricha L'Gufa and Hitkaven L'Malacha Acheret
(13:10)
Doing a malacha for a different purpose; intending to do one malacha but doing another instead.
Sources: MT Shabbos 1:7-9
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| 27 Sivan 5767 | listen |
Intentionality (Part 1): Lo Mitkaven and Psik Reisha
(15:38)
Introduction to malechet machshevet and intentionality with regard to shabbos malacha.
Sources: MT Shabbos 1:5-6
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| 26 Sivan 5767 | listen |
Introduction to Shabbos Malachos: Chayav, Patur, and Mutar
(13:57)
An introduction to the general principles of "work" on shabbos.
Sources: MT Shabbos 1:1-4
Dedicated by Ronald and Marion Stein l'ilui nishmat Menachem Mendel ben Yeshua Yaakov on the occasion of his yahrzeit.
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| 29 Kislev 5767 | listen |
Torah Readings on Chanukah, Shabbos Chanukah, and Rosh Chodesh Chanukah
(11:09)
What is the Torah reading for Chanukah and why? What do we read on shabbos? Rosh Chodesh?
Sources: OC 684:1-2; MB 1-2,5,7
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| 22 Kislev 5767 | listen |
When the First Night of Chanukah Falls on Erev Shabbos
(15:37)
When lighting Chanukah candles before Shabbos, it is best to daven Mincha first -- especially if it's the first night. Why? And what if you can't?
Sources: OC 672:1; OC 679:1; MB 679:1-2; Shaar HaTzium 679:7
Dedicated for chizuk for Oritte bat Aliza.
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| 28 Tishrei 5767 | listen |
Shabbos Mevarchim and Machar Chodesh
(7:48)
On the shabbos before Rosh Chodesh, we announce the upcoming month. Also, if Rosh Chodesh falls on Sunday, we read a special haftarah on Shabbos.
Sources: OC 417; MB 417:1
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