Lomdus On The Amud: Following The Oraysa Schedule

Yevamos 93b: Hotel Reservations and אין אדם מקנה דבר שלא בא לעולם

Yevamos 93a: אין אדם מקנה דבר שלא באו לעולם - How did Esav sell the Bechora?

Yevamos 92b: The Geder of the Issur Yibum if the Yevamah is Mezaneh

Yevamos 92a: The Lav of Zenus according to the Rambam

Yevamos 91b: The Astonishing Chiddush of the Kli Chemdah — Is There No Aveirah B'Shogeg by a Lav She'ein Bo Ma'aseh?The Kli Chemdah suggests an astonishing chiddush: when someone violates a lav she'ein bo ma'aseh b'shogeg, it may not be considered a ma'aseh aveirah at all.A lav can be violated through an action or through a conscious decision not to act. But when someone is shogeg—completely unaware of the prohibition—and there is no physical action, what exactly constitutes the aveirah? There was neither an act of violation nor a conscious decision to refrain from doing what the Torah required.The Kli Chemdah brings a fascinating proof from Rashi in Berachos 2a regarding nosar. Rashi explains that Chazal prohibited eating korbanos after chatzos out of concern that a person might continue eating until after daybreak, when the meat becomes nosar.But why does Rashi focus specifically on eating the meat after daybreak? Simply leaving korban meat uneaten until morning itself violates “Lo Sosiru ad boker.”The Kli Chemdah answers with his remarkable yesod: merely forgetting to finish the korban before morning is a lav she'ein bo ma'aseh committed b'shogeg. There is no action and no conscious decision to violate the prohibition—and therefore, he argues, there is no ma'aseh aveirah at all.Chazal therefore made their gezeirah to prevent the person from actually eating the nosar, an active violation.A startling way to understand the very definition of an aveirah b'shogeg—and an extraordinary chiddush of the Kli Chemdah.

When a Bas Kohen becomes a zonah, why does she lose her right to eat terumah? Does the status of zonah actually strip away her Kedushas Kehunah, or does she remain a Bas Kohen while acquiring a new pesul that prevents her from eating terumah? A fascinating chakirah that may lie at the heart of a dispute between the Rambam and Tosafos—and has surprising implications for a Bas Levi and Maaser Rishon.

Yevamos 90b: When Does the Mitzvah of Tzitzis Begin? — The Fascinating Chiddush of Tosfos

Rav Elchanan Wasserman's Chakirah: Does Chazal Uproot the Mitzvah—or Does It Still Exist?When Chazal tell us to refrain from fulfilling a Torah mitzvah through שב ואל תעשה, what exactly are they accomplishing?Did they actually remove the Torah obligation, leaving no mitzvah to perform? Or does the mitzvah remain fully intact, with Chazal merely instructing us not to fulfill it in that particular circumstance?This profound chakirah of Rav Elchanan Wasserman (Kovetz He'aros, Siman 69) reshapes the way we understand the authority of Chazal and the relationship between Torah law and Rabbinic enactments. Through classic examples such as shofar, lulav, and tzitzis, we'll uncover a fundamental machlokes that has far-reaching implications throughout Shas.A deep, elegant lomdus that changes the way you'll think about "יש כח ביד חכמים לעקור דבר מן התורה בשב ואל תעשה."

חקירת הגר"ח בתורם מן הרע על היפה: מעשה האיסור או חסרון בקיום מצות תרומה?

אין תורמין מן הטמא על הטהור – The יסוד of the קובץ הערות

עד אחד נאמן – The חידוש of היתר עגונה

The Famous Chakirah: Is Eid Echad b'Issurin a Din of Eidus or Ne'emanus?

Yevamos 87b: Hakdamah to the 10th Perek of Yevamos

The Aruch LaNer's Famous Chakirah: How Does a Kohen Son Feed His Mother Terumah?

Yevamos 86b: Minchas Chinuch - how can Chazal uproot the Din Deoraisa of Ma'aser to Leviim

Yevamos 86a: The Chakira of the Assun Deoraisa - Tevel

Yevamos 85b: The Shaagas Aryeh's Chakirah in “Divrei Sofrim Tzerichin Chizuk”

Yevamos 85a — Part Two: The Chakirah That Defines Lifnei Iver

Yevamos 84b: The Question That Redefines Lifnei Iver

Yevamos 84a: Aruch LaNer's Brilliant Insight -Why Rebbe Was Only Allowed One Halcha

Yevamos 83b: Rav Tzvi Pesach and the Story of the Water During the 1948 War

Yevamos 83a: The Minchas Chinuch's Chakirah—Ma'aseh or Tzemichah?

Yevamos 81b: Bitul by Ner Chanukah Part 2

Yevamos 81a: Bitul by Ner Chanukah Part 1

Yevamos 80b: The Yesod of the שערי יושר in the שיטת הרמב״ם – ספק דאורייתא לחומרא

Yevamos 80a: קושיית התוספות בעניין קטן ובר־עונשין, התראת ספק, ויסוד השערי יושר

Yevamos 79b – 's Classic Piece on ערוה אחר נפילה

Yevamos 79a: רחמנים, ביישנים וגומלי חסדים — What If One Is Missing?

Yevamos 78b: היסוד של הגרשש שקאפ בעניין ספק ממזר

Yevamos 78a: בעניין גדר מצרי שני

Yevamos 77b: Carrying Guns in Shul

Yevamos 77a: היסוד של הגרי""ז בעניין הלכה למשה מסיני וההיתר של מואבית ולא מואבית

Yevamos 76b: גדר דין אמוני ולא מואבית כלפי דין לא תדרוש שלומם וטובתם

Yevamos 76a: Can a Kohen who is a פצוע דכא duchen?

Yevamos 75b: יסוד איסור פצוע דכא

Yevamos 75a: גדר איסור פצוע דכא מדיני איסורי ביאה או קדושת ישראל

Yevamos 74b: Bikurim During Shemita

Yevamos 74a: היסוד של הגרי""ז בעניין סיכה כשתייה

Yevamos 73b: יסוד הגרי""ז בעניין ביכורים כתרומה ומעשר שני

Yevamos 73a: גדר דין ביעור מעשרות

Yevamos 72b: משוך ערלתו ודין במי שנולד מהול

Yevamos 72a: חובת הכרת על ביטול מילה והמשוך

Yevamos 70b – Part 1: Why Did Avraham Avinu Wait for the Tzivui to Perform Milah?

Yevamos 70a – Why Is an Orel Pasul? Chiyuv Milah or Metzius Ha'Orlah?

Yevamos 69a–69b: Super Episode — Does a Son Enable His Mother to Eat Terumah Through His Own Koach or His Father's?

Yevamos 69b: An Almanah — Does She Follow Her Husband's Minhagim or Her Father's?

Yevamos 68a: Rav Shimon s Yesod about Safek Ben Teisha and Chezkas Katan

Yevamos 67b: Mishnas Rav Aharon's Fascinating Chiddush in a Yevamah's Ability to Eat Terumah

Yevamos 67a: Major Chakira - Why does an Eishes Kohen eat Terumah

Yevamos 66b: Hakdamah Perek Almanah LKohen Gadol

Yevamos 66a: דין ערבות בנשים