587 Lessons

Some of the Laws of Seudah Shelishis
Rabbi Yirmiyohu Kaganoff | Adar 5783

How Does a Heter Iska Work?
Andy Gross, a businessman who is proud that he is now observing mitzvos, is on time for his appointment. After a brief greeting, I ask him what brings him to my office on this beautiful morning. “I recently learned that even though the Torah prohibits paying or receiving interest, there is something called a heter iska that legalizes it. How can we legitimize something that the Torah expressly prohibits?” Indeed, Andy’s question is both insightful and important, and deserves a thorough explanation. Why don’t you join us by reading the attached article?
Rabbi Yirmiyohu Kaganoff | Adar 5783

Bedeviled by Stirring Events – or Some Insights on the Melacha of Losh
I was recently asked the following question “My daughter was taught that we cannot make deviled eggs on Shabbos because adding mustard and shaping them is considered ‘kneading’ the yolks. But I remember my mother always mixed hard boiled eggs with minced onion and oil on Shabbos morning shortly before the meal. Could my mother have been wrong?”
Rabbi Yirmiyohu Kaganoff | Adar 5783

Women and Reading Megillah
Rabbi Yirmiyohu Kaganoff | Adar 5783

The Great Cottage Cheese Controversy
This week’s parsha includes one of the places where the Torah teaches about mixing milk and meat together
Rabbi Yirmiyohu Kaganoff

Between Yishtabach and Borchu
Since Az Yashir, which concludes pesukei dezimra, is in parshas Beshalach, this article about the conclusion of Pesukei Dezimra is most appropriate.
Rabbi Yirmiyohu Kaganoff

Gluten-Free, Sake, and Vegan
This week’s parsha, Bo, teaches about matzoh, which can be made only from the five types of grain that can become chametz (wheat, barley, spelt, rye, and oats). This gives us the opportunity to discuss kashrus issues related to gluten and non-gluten grains.
Rabbi Yirmiyohu Kaganoff | Shvat 5783

The Why’s and Whey’s of Gevinas Akum
Animals and interactions between Jews and non-Jews both figure significantly in this week’s Parsha, which I use as my excuse to discuss: Say “Cheese!”
Rabbi Yirmiyohu Kaganoff | Tevet 5783

May a Cohen Go to the Dentist?
Yaakov Avinu blessed his sons with brachos appropriate to their future callings in life. They and their children after them for generations engaged in many different professions, some of them even becoming dentists…
Rabbi Yirmiyohu Kaganoff

Some Light Chanukah Questions
Rabbi Yirmiyohu Kaganoff | Kislev 5783

The Prohibition of Chanufah
According to some opinions, Yaakov may have been guilty of chanufah in his interactions with Eisav in this week’s parsha. What is chanufah and what did Yaakov do?
Rabbi Yirmiyohu Kaganoff | Kislev, 17, 5783

May I Eat before I Daven?
Since the Gemara notes that a source in this week’s parsha teaches that Yaakov introduced the Maariv prayers…
Rabbi Yirmiyohu Kaganoff | 4 Kislev 5783

Conflict of Interest
Are you permitted to judge a case in which a friend of yours is one of the litigants? What about someone who davens in the same shul? Or someone who consistently rubs you the wrong way?
Rabbi Yirmiyohu Kaganoff | Cheshvan 29 5783

Blended and Synthetic Tzitzis
According to Chazal, as reward for Avraham turning down the king of Sodom’s offer, and declining to take even a chut, a thread, his descendants were rewarded with the mitzvah of tzitzis.
Rabbi Yirmiyohu Kaganoff | Cheshvan 8 5783

May I Daven in English?
The end of parshas Noach teaches about the beginning of languages…
Rabbi Yirmiyohu Kaganoff | Cheshvan 5 5783

Calendar Controversy
When Yamim Nora’im “Fell” on Disputed Days
When Yamim Nora’im “Fell” on Disputed Days
Rabbi Yirmiyohu Kaganoff | Elul 24 5782

Pruzbul
The mitzvah of Shemittas Kesafim comes into effect this year immediately before Rosh Hashanah. This law cancels all debts that someone is owed, meaning that the creditor cannot force collection.
Rabbi Yirmiyohu Kaganoff | Elul 17 5782

Otzar Bais Din or Heter Otzar Beis Din
An Otzar Beis Din is literally ‘a storehouse operated by Beis Din.’ Why would Beis Din operate a warehouse?
Rabbi Yirmiyohu Kaganoff | Elul 10 5782

No Talebearing!
What constitutes talebearing?
This week’s parsha teaches the prohibition against having one witness testify against someone, which is a violation of loshon hora.
Rabbi Yirmiyohu Kaganoff | Elul 5 5782
