No community start suggestion yet.
What does 'kavshah zakuk lah' (if it goes out, relight it) mean for Chanukah (חנוכה) candle obligations? Rashi (רש"י) holds you've fulfilled hadlakas haner even if candles die out early, while the Rambam (רמב"ם) sees extinguishing as retroactively invalidating the entire mitzvah (מצוה). This machlokes reshapes which oils are merely discouraged versus completely pasul.
This shiur analyzes a complex Talmudic discussion from Masechta Shabbos (שבת) regarding the halachos of Chanukah (חנוכה) lighting, specifically examining the principle of 'kavshah zakuk lah' (if it goes out, you must relight it). The Gemara (גמרא) discusses which oils and wicks are permissible for Chanukah candles, with particular focus on the difference between Shabbos and weekday lighting. Rabbi Zweig explores the fundamental disagreement between Rashi (רש"י) and the Rambam (רמב"ם) regarding the meaning of 'kavshah zakuk lah.' According to Rashi's understanding, if candles go out and one is obligated to relight them, the person fulfills the basic mitzvah (מצוה) of hadlakas haner (lighting candles) even if they walk away and the candles extinguish. The concern is only about completing the secondary requirement of pirsumei nisa (publicizing the miracle) for the full required time. However, according to the Rambam's interpretation, 'kavshah zakuk lah' means that if the candles go out, retroactively the person has accomplished nothing - the entire mitzvah is invalidated. This leads to a fundamental disagreement about whether certain oils and wicks are merely discouraged (lechatechilah) or completely invalid (pasul). The shiur examines how this dispute affects the understanding of the Mishna's statement 'ein madlikin' (we do not light) - whether this prohibition applies equally on Shabbos and weekdays or has different applications. Rabbi Zweig also discusses how Tosafos (תוספות) addresses the question of why the Gemara mentions both Shabbos and weekday restrictions if the reasoning is the same. The analysis extends to practical applications, including the ruling of the Terumat Hadeshen regarding Erev Shabbos lighting when candles extinguish before the proper time. Throughout, the shiur demonstrates how these technical halachic discussions reflect deeper principles about the nature of mitzvah fulfillment and the relationship between intention, action, and result in Jewish law.
Dedicate a Shiur in Gemara
L'ilui nishmas a loved one. In honor of a simcha or yahrzeit. As a zechus for a refuah sheleimah. Your dedication helps carry Rabbi Zweig's Torah to learners around the world.
Up Next in this Series
How can Shabbos observance atone for the idolatry of Enosh's generation? The Rambam's reading shows that generation sought God through physical intermediaries rather than direct connection. Proper Shabbos observance creates authentic divine experience that naturally displaces attraction to spiritual substitutes - like tasting real coffee exposes ersatz as meaningless.
Why does halacha forbid entering dangerous places if everything happens by Divine decree? The shiur examines the debate between Rashi and Tosfos on traveling at night, developing a fundamental distinction: Rashi holds one must avoid even deserved punishments that Hashem delays through mercy, while Tosfos holds the prohibition addresses self-inflicted harm through free will. This framework reveals how people rationalize self-destructive behavior as "hashgacha."
Why does the Gemara praise hospitality to scholars as a unique mitzvah rather than ordinary hachnasas orchim? The shiur distinguishes two mitzvahs: hachnasas orchim (providing for those in need) and connecting to talmidei chachamim (cleaving to God through scholars). Yisro's meal for the Jewish leaders wasn't charity—it was his way of bonding with those transformed by Torah, teaching that learning must fundamentally change who we are.
Shabbos 21a-21b
Looking for the full transcript?
Full access is available to members of the TUF Alumni Association or the Yam Hagadol Foundation.
Already a member? Let the admin know!
Why does the Gemara say one Shabbos protects from Amalek while two Shabboses bring redemption? The shiur applies a principle from Kiddushin about repetition changing psychology: the first time doing anything is experimental, but the second demonstrates genuine desire. True Shabbos connection with Hashem requires moving beyond spiritual curiosity to authentic internalization.