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Imagine discovering that one seemingly simple halacha about weddings on Chol Hamoed actually rests on two completely independent sources — one rooted in the very nature of simcha itself, the other in the unique geder of Yom Tov — and that the Rambam intentionally placed it in two different sections of his Mishneh Torah to teach us both.

In this 6-minute Rambam In-Depth shiur, we unpack Hilchos Ishus 10:11 and Hilchos Yom Tov 7:17, explore the pre-Matan Torah pasuk from Bereishis 29 that Lavan told Yaakov (“M’lei sh’vuah zos”), confront the classic question of deriving halacha from events before Sinai, and discover the Rebbe’s profound Likutei Sichos resolution that this is a svara (logical reasoning) where the pasuk reveals which of two contradictory svaros prevails.

We’ll see why “ain ma’arvin simcha b’simcha” applies to nisuin on its own merits — not just because you might forget the Yom Tov simcha — and what practical nafka mina’s this creates in halacha. Whether you’re a student of Rambam, a baal simcha planning a wedding, or someone seeking to understand how the Rambam’s precise wording encodes multiple layers of Torah thought, this video will sharpen your appreciation of systematic halachic reasoning and its relevance to Jewish life today.

In this enlightening Torah discussion, we’ll explore:

• The exact text of Rambam Hilchos Ishus 10:11 and why he cites the Bereishis pasuk here (but not in Yom Tov)
• The pre-Matan Torah challenge and the Rebbe’s svara-based answer from Likutei Sichos
• Why the Rambam repeats the identical halacha in Hilchos Yom Tov 7:17 with an entirely different reason
• The two independent gedarim: Yom Tov’s demand for undiluted simcha vs. the intrinsic prohibition within the mitzvah of nisuin itself
• Real-world implications, nafka minas, and how intense modern weddings can overshadow Yom Tov even when technically permitted

The Rambam’s genius lies in his economy of language and deliberate structure: he brings the same law in two places because they stem from two different sources.

In Hilchos Ishus the focus is the mitzvah of marriage itself — one simcha can diminish another, as proven by the pre-Sinai event that shows which svara wins. In Hilchos Yom Tov the emphasis is on protecting the geder of festival joy so that the chosson-kallah simcha does not cause you to “forget” or diminish the simcha of the day. This is not repetition for memory’s sake; it is precision teaching two distinct halachic realities.

The shiur also touches on broader nuances: how simchas can sometimes enhance each other in other contexts, edge cases on Chol Hamoed, modern applications (planning weddings around Yom Tov without diminishing either joy), and why the Rebbe’s explanation preserves the integrity of pre-Sinai events for logical principles rather than strict halachic derivation.

Watch:

Sources and References:

Rambam, Hilchos Ishus 10:11 & Hilchos Yom Tov 7:17
Bereishis 29:27 (Lavan to Yaakov)
Likutei Sichos (Rebbe’s explanation on pre-Matan Torah svaros)
Classic commentaries on “ain ma’arvin simcha b’simcha”

Frequently Asked Questions:

Q1: Why does the Rambam bring the pasuk only in Hilchos Ishus?
A1: Because that location focuses on the intrinsic nature of the nisuin mitzvah itself.

Q2: Can simchas ever enhance each other?
A2: Yes — the shiur notes that in some contexts they might, but the predominant svara (proven by the pasuk) is that one can diminish the other, especially for weddings.

Q3: Are there practical halachic differences (nafkah minas) from the two sources?
A3: Potentially yes — the shiur leaves room for further exploration in a future episode.

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