Mishneh Torah, Rest on the Tenth of Tishrei 1-3

Sugya Map

• Primary Issue: The ontological status of Yom Kippur as a Shabbat vis-à-vis prohibitions of labor (melacha) and physical indulgence (inuy).
• Nafka Minot:
  • Chiluk Melachot: Does the principle of "dividing labors" (liability for each distinct act) apply to Yom Kippur as it does to Shabbat?
  • Source of Prohibitions: Are the five afflictions (washing, anointing, etc.) Torah-level or Rabbinic?
  • The "Addition" (Tosefet): Does the obligation to "add from the mundane to the holy" apply to melacha or only to inuy?
• Primary Sources:
  • Leviticus 23:32: "It shall be a Sabbath of Sabbaths for you, and you shall afflict your souls."
  • Yoma 74a-81b: The core Gemara defining measures, prohibitions, and the nature of the day.
  • Mishneh Torah, Hilchot Shevitat Asor 1-3: The Rambam’s systematic codification.

Text Snapshot

"It is a positive commandment to refrain from all work on the tenth [day] of the seventh month... Anyone who performs a [forbidden] labor negates the observance of [this] positive commandment and violates a negative commandment... he is liable for karet." (1:1)

Nuance: Rambam emphasizes shabbaton (שבתון) as the source of the positive commandment. Note the distinction in 1:4: "The general principle is that there is no difference between the Sabbath and Yom Kippur... except that a person who willfully performs a forbidden labor on the Sabbath is liable for execution... and on Yom Kippur [such an act warrants merely] karet." The dikduk here is surgical: he maintains the identity of the cheftza (the day's holiness) while distinguishing the gavra (the penalty).

Readings

1. The Ramban (Leviticus 23:24) on the "Sabbath of Sabbaths"

The Ramban challenges the notion that the prohibition of melacha on all holidays is derived simply from the word shabbaton. He argues that the Torah deliberately linked all mo'adim (appointed times) through the terminology of mikra'ei kodesh. His chiddush is that the festivals are not disparate entities but form a unified category of holiness. By linking them, the Torah implies that the "rest" on Yom Kippur is the archetype—the "Sabbath of Sabbaths"—which informs how we understand the sanctity of the other festivals.

2. The Ohr Sameach (1:2:1) on the Name "Yom Kippur"

The Ohr Sameach offers a startling insight into why the Rambam avoids the term "Yom Kippur" when discussing the transgression of melacha. He argues that if a person performs a forbidden labor on this day, they have fundamentally rejected the day's purpose. Since the day is called "Day of Atonement" (Yom Kippur), one who defies the prohibition of labor is, by definition, not receiving atonement. Therefore, in the context of issur melacha, the day loses its title; it is merely the "tenth of Tishrei." This is a meta-halachic chiddush: the name of the day is conditional upon the observer's conduct.

3. The Maggid Mishneh (1:2:2) on Tosefet

The Maggid Mishneh parses the Rambam’s requirement to add time to the fast. He suggests a critical distinction: the obligation to "add" is a chiyuv gavra (a personal obligation) tied to the inuy (affliction), not necessarily an expansion of the cheftza (the day's objective holiness) regarding melacha. While the day is holy, the commandment to stretch the boundaries is a function of the soul’s need to afflict itself, a view that separates the temporal extension from the ontological Sabbath-status.

Friction

The Strongest Kushya: The Lechem Mishneh (1:1) flags a major contradiction. If shabbaton (שבתון) is the source for the prohibition of melacha, and shabbat (שבת) is the source for the prohibition of eating (as implied by the Rambam), why does the Rambam treat them as an interchangeable legislative block? Specifically, if we derive the five afflictions from shabbaton, why does the Rambam also use shabbat to define the prohibition of eating?

The Terutz: We must distinguish between the source of authority and the scope of application. The Rambam views Shabbat as the root of "cessation from mundane activity." On Yom Kippur, the Torah uses Shabbat to enforce the "cessation of consumption" (the ultimate mundane act) and Shabbaton to enforce the "cessation of creative mastery" (the ultimate mundane labor). The friction is resolved by recognizing that the Rambam is not performing a simple exegesis, but a hierarchy: Shabbat is the generic command to be "unlike the weekday," while Shabbaton is the specific instruction to "be like the Shabbat of Creation."

Intertext

• Chagigah 18a: The debates regarding Chol HaMoed labor rely on the same terminological links between mo'adim and mikra'ei kodesh that Rambam uses to ground the sanctity of Yom Kippur.
• SA Orach Chayim 608: The Shulchan Aruch codifies the Rambam's approach to tosefet, reinforcing the idea that the "addition" is not just a fence, but a fulfillment of the Torah's command to "afflict your souls on the ninth."

Psak/Practice

In modern practice, the Rambam’s insistence that there is "no difference" between Shabbat and Yom Kippur regarding melacha governs the strict application of muktzeh and shvut on the fast. The takeaway for the observant: do not look at Yom Kippur as a "fast day" with some extra rules; it is a Shabbat that happens to be a fast. The melacha restrictions are not secondary to the fasting; they are the primary framework of the day's holiness.

Takeaway

Yom Kippur is not an exception to the Sabbath; it is the intensification of the Sabbath. The prohibition of labor is the baseline of holiness, while the fast is the vehicle for the soul's ascent.