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Mishneh Torah, Things Forbidden on the Altar 5-7

On-RampExpert – Beit Midrash AnalysisJuly 10, 2026

Sugya Map

  • Core Issue: The parameters of issur (prohibition) and pesul (invalidation) regarding unauthorized substances (leaven/honey) and substandard materials on the Altar.
  • Nafka Mina:
    • Does kol shehu (any amount) trigger lashes (malkot), or is there a shiur (measure) required?
    • Does a prohibition derived from a mitzvah aseh (positive command) carry the weight of a lav (negative command) for the purpose of malkot?
    • Can the Sages nullify the validity of a sacrifice ex post facto if it was obtained via robbery?
  • Primary Sources: Leviticus 2:11, Leviticus 2:13, Menachot 57b, Menachot 58b, Yoma 4:5, Mishneh Torah, Things Forbidden on the Altar 5-7.

Text Snapshot

  • Halachah 5:1: "Even the slightest amount of a leavening agent and sweet entity is forbidden... one is liable only if he set them afire together with a sacrifice..."
    • Leshon nuance: The Rambam distinguishes between issur (prohibition, which is kol shehu) and chiyuv malkot (liability for lashes, which requires kezayit).
  • Halachah 5:11: "It is a positive commandment to salt all the sacrifices... there is no explicit verse to rely on [for the exemption of wine/blood/wood]."
    • Dikduk nuance: The phrase "covenant of your God" (Leviticus 2:13) anchors the issur of omitting salt, transforming an omission into a ma'aseh (act) of withholding.

Readings

The Kessef Mishneh on Kol Shehu vs. Kezayit

The Kessef Mishneh (referencing the debate in Menachot 58b) struggles with the Rambam’s apparent contradiction: he posits that leaven and honey are forbidden bi-kolei shehu (in any amount), yet later limits the liability for lashes to a kezayit. The Kessef Mishneh reconciles this by suggesting that kol shehu applies to the issur itself, but the act of haktarah (burning) is only legally significant—and thus punishable—when it reaches the standard measure of a kezayit.

Yekhahen Pe'er on the Nature of the Prohibition

Yekhahen Pe'er advances a sophisticated reading of the Rambam’s view on "mixed substances." He argues that when the leaven/honey is burned bi-eineiha (in its pure state), the issur is indeed kol shehu. However, when it is part of a ta'arovet (mixture), the halacha of achshavei (subjective importance) applies. He suggests that the Rambam maintains a distinction: if it is pure, the Torah considers any amount a transgression of the Altar's sanctity. If mixed, the Sages require a kezayit to avoid the complexity of "half-measures" (chatzi shiur). This effectively moves the needle from a technical quantity issue to a metaphysical one: is the issur in the object or in the haktarah?


Friction

The Strongest Kushya: If malkot are generally not administered for a lav haba miklal aseh (a prohibition derived from a positive command), how does the Rambam justify malkot for offering an impure animal (5:4)?

The Terutz: The Rambam (via the Radbaz) argues that these are not merely "inferred" prohibitions. The Torah provides a positive command to offer "pure" animals (Deuteronomy 14:6). By offering an impure one, the transgressor is not just failing a logical inference; he is violating the primary definition of what constitutes a sacrifice. The Radbaz clarifies that the logic only expands the scope of the prohibition; the foundation is the mitzvah itself.

The Second Friction: The Ra'avad objects to the Rambam's claim that one receives malkot for omitting salt (5:12). If malkot require a ma'aseh (an act), how can the omission of salt be a ma'aseh? The Terutz provided by the tradition is that the act of haktarah—placing the sacrifice on the altar without salt—is the ma'aseh. The "withholding" is the issur, but the "offering" is the act that triggers the punishment.


Intertext

  • On Robbery: The Rambam’s ruling that a stolen sacrifice, if publicly known, remains invalid to protect the Altar's honor (5:6) mirrors the Talmudic principle of takkanat ha-shavim found in Bava Kamma 66b. The Rambam elevates this to a meta-halachic principle: the "dignity of the Altar" (tiferet hamizbe'ach) functions as an independent variable capable of overriding technical ownership laws.
  • On Quality: The Rambam’s insistence on "the best of one's possession" (7:11) finds its source in Malachi 1:14. This is not mere hiddur mitzvah; it is the foundational logic of the Avodah. If the Altar represents the intersection of the finite and Infinite, the material quality must reflect that aspiration.

Psak/Practice

The Rambam’s heuristic here is "Superiority as Essence." In modern applications, this serves as a model for hiddur mitzvah as a halachic category rather than a subjective preference.

  • Psak: When a mitzvah involves communal or sacred assets (like the salt or the wood), the standard of quality is not merely "permitted" but "optimal."
  • Meta-Psak: The Rambam’s framework teaches that the hefker (owner's despair) of a stolen object might change the monetary status, but it cannot purify the spiritual status of an object meant for God’s Table.

Takeaway

The Altar is a zone of total purity where the "smallest amount" of the profane acts as a total disruptor; therefore, excellence isn't a goal—it is the baseline requirement for participation.