Kli Rishon and Kli Sheini
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In this shiur (Torah class) on Hilchot Shabbat, Rabbi Shimon Isaacson explains the fundamental differences between kli rishon and kli sheini.
Videos
Bishul: Three Levels of Transferred Heat
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In this Torah shiur (class) on Hilchot Shabbat, Rabbi Shimon Isaacson discusses the kli rishon (first degree of heated container), kli sheni (second degree of heated container), and kli shlishi (third degree of heated container), and explains the Halachot that refer to each, as regards to cooking or heating food on Shabbat.
Ain Bishul Achar Afiya
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In this Torah shiur on Hilchot Shabbat, Rabbi Shimon Isaacson explains the Halachic ruling of Ain Bishul Achar Afiya/Tzliyah. There is no additional cooking after an item has been baked or roasted, and how it applies to relevant questionable situations.
Ein Bishul Achar Bishul
Posted onIn this Torah shiur (class) on Hilchot Shabbat, Rabbi Shimon Isaacson discusses the details for the Halacha that there cannot be cooking of a previously cooked item, and how the Halacha views baking after cooking.
Bishul of Liquids
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In this Torah shiur (class) on Hilchot Shabbat, Rabbi Shimon Isaacson discusses the laws of cooking on Shabbat, focusing on the laws relating to liquid foods.
Introduction to Laws of Bishul
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In this Torah shiur (class) on the laws of Shabbat, Rabbi Shimon Isaacon discusses the definition of Bishul (cooking) the status of partially cooking food on Shabbat.
Practical Examples of Dosh
Posted onIn this Torah shiur (class) on Hilchot SHabbat, Rabbi Shimon Isaacson sums up the Melacha of Dosh and its contemporary applications, such as squeezing fruit and making ice.
Melechet Dosh, Part 2
Posted onIn this Torah shiur (class) on the laws of Shabbat, Rabbi Shimon Isaacson teaches the Melacha of Dosh (literally Threshing), the prohibition of extracting a desired item from an undesired one . In this class, Rabbi Isaacson discusses juicing fruit on Shabbat, and whether one can squeeze a fruit on Shabbat if the liquid is not used.
Beginning the Melacha of Dosh
Posted onIn this Torah shiur (class) on Hilchot Shabbat, Rabbi Shimon Isaacson begins the Melacha of Dosh, Threshing. This melacha can be understood through a discussion of milking a cow on Shabbat.
Assessing Aging
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Practical Applications of Psik Reisha D’la Nicha Lei
Posted onIn his final class of Hilchot Shabbat II, Rabbi Shimon Isaacson discusses the practical applications of the laws of Psik Reisha D’La Nicha Lei. Examples such as cutting letters on a cake, turning refrigerator lights on and off by opening and closing a refrigerator doors, and eating grapefruit are discussed in this shiur.
Overview of Psik Reisha D’la Nicha Lei
Posted onIn this class on Hilchot Shabbat, Rabbi Shimon Isaacson teaches the important Halachic concept of Psik Reisha D’ La Nicha Lei, an inevitable performance of a melacha that is not intended by the person doing the action. The class discusses the Machlokes between Tosfot and the Aruch about whether or not such actions are permissible on Shabbat.
Violating Shabbos without Intent Part II
Posted onRabbi Shimon Isaacson continues his series on Hilchot Shabbat, discussing the Laws pertaining to the unintentional vioaltion of Shabbos.
Violating Shabbos Without Intent Part I
Posted onContinuing his discussion of Hilchot Shabbat, Rabbi Shimon Isaacson concludes his explanation of the laws of Tochain, grinding, and begins an exploration of the laws of Dosh, threshing. He then discusses the laws pertaining to unintentional violation of Shabbos, and its applications.
Hilchot Tochain, Part 2
Posted onRabbi Shimon Isaacson continues his explanation of the laws of Tochein, grinding of food, on Shabbat.
Conclusion of Borer, Beginning of Tochain
Posted onRabbi Shimon Isaacson finishes his discussion of the laws of Borer on Shabbat, and begins to introduce the melacha of Tochein, grinding.
Common Borer Questions
Posted onRabbi Isaacson continues to delve into different aspects of the melacha of Borer, defines what a Halacha calls a ‘kli’ and what Halacha calls a ‘yad’, and discusses common Borer questions.
Borer While Eating
Posted onIn this Hilchot Shabbat class, Rabbi Isaacson discusses the heter of separating food while one is eating, such as separating watermelon pits or fish bones.
Use of Filters
Posted onIn this class on Hilchot Shabbat, Rabbi Shimon Isaacson continues his discussion of the laws of Borer on Shabbat, this week discussing the use of water filters on Shabbot, squeezing liquid out of cans, and peeling vegetables.
Borer, Part 3
Posted onIn this class on Hilchot Shabbat, Rabbi Shimon Isaacson analyzes the qualifications of a mixture, and examines the halacha when one has two different species of food items.
Borer, Part 2
Posted onIn this class on Hilchot Shabbat, Rabbi Shimon Isaacson defines the basic parameters of sorting, and defines what constitutes a mixture.
Borer, Part 1
Posted onRabbi Shimon Isaacson introduces the melachot of winnowing and selecting.
Melachot With A Purpose
Posted onIn his class on Hilchot Shabbat, Rabbi Shimon Isaacson explains what “Al M’nat” melachot are.
Practical Halachot of Gozez
Posted onRabbi Shimon Isaacson examines the practical aspects of the melacha of Gozez, including combing hair on Shabbat.
Mikvah on Shabbat
Posted onRabbi Shimon Isaacson explains the laws of a woman who forgot to cut her nails before going to the mikvah on Friday night.
Gozez
Posted onRabbi Shimon Isaacson continues the explanation of “melacha sh’eino tzricha legufah”, and how it applies to the melacha of “Gozez” and the prohibition of cutting fingernails on Shabbat.
The Nature of Toldot, Part 2
Posted onRabbi Shimon Isaacson continues with an analysis of whether a Toldah is an expansion of the Av or a new creation.
The Nature of Toldot Melacha
Posted onRabbi Shimon Isaacson focuses on the nature of Toldot Melacha.
Introduction to Toldot Melacha
Posted onRabbi Shimon Isaacson continues the introduction to Avos and Toldot, and introduces the critical concept of ‘melechet machshevet.’
Introduction to Avot Melachot
Posted onRabbi Shimon Isaacson explores whether the Avot Melachot are learned out only from the building of the Mishkan, or also from Avodat HaKorbanot.