Mishnah Kelim 13:2-3

Sugya Map

• Issue: The threshold of "functional identity" (שם כלי) for multi-functional metal implements under the laws of Tuma'ah. When a tool possesses two distinct operational ends (e.g., a makhol with a point and a spoon), does the loss of one end nullify the keili status of the remaining part?
• Nafka Mina: Whether a remnant of a broken tool retains its susceptibility to impurity (tamei) or becomes inert (tahor), contingent upon whether the remaining part can still perform a "usual work" (מלאכתו) or if the object has lost its fundamental designation.
• Primary Sources: Mishnah Kelim 13:2-3; Rash MiShantz ad loc.; Rambam, Commentary to the Mishnah, Kelim 13:2.

Text Snapshot

The Mishnah opens with a taxonomy of dual-purpose tools: “The sword, knife, dagger, spear, hand-sickle, harvest-sickle, clipper, and barbers’ [tools] whose component parts were separated, are susceptible to impurity.” Mishnah Kelim 13:2.

The key dikduk here lies in the phrase “whose component parts were separated” (שנתפרקו). The debate between Rabbi Yose and the Sages hinges on whether the separation of a multi-functional tool creates two independent vessels or a broken remnant. Note the specific terminology for the makhol (a multi-purpose probe) and zomalister (a kitchen tool with a fork and spoon). The text insists on functional persistence: “If its spoon is missing, it is still susceptible to impurity on account of its point.”

Readings

1. Rambam’s Functionalism

Rambam (Commentary, ad loc.) provides a masterful structural analysis of these tools. He defines the koligrophon as a dual-function iron tool: one end is a flat spoon (כף) for ash, the other is a series of teeth (שינים) for manipulating items in the fire. Rambam emphasizes that the keili status is not tied to the physical unity of the object but to the utility of the remaining portion. His chiddush is the "Proportionality Rule": if the remaining part is too short to be held safely while the other end is in the fire, it loses its status. He writes: "When the fork was removed with the majority of the handle... the remaining part cannot be held by a person... it will burn his hand... therefore it is clean." For Rambam, tuma'ah is an extension of the human hand; if the tool’s geometry prevents safe operation, it is effectively non-functional.

2. Rash MiShantz’s Holistic Definition

Rash MiShantz focuses on the dual-nature of these tools, noting that they essentially function as two independent tools fused into one shaft. He identifies the zomalister as the tool mentioned in Bava Metzia 33a, used for both clearing grease from pots and retrieving meat. His chiddush lies in the interpretation of “shnei tashmishin” (two services). He argues that the Mishnah treats these not as "broken" objects, but as objects whose "other half" has simply been removed. Since each side acts as a standalone tool, the removal of one side does not trigger the “batel” (nullification) of the other. The tool remains a keili because the remnant is not a shvirah (breakage) but a hitparshut (separation).

Friction

The Kushya: The "Sages vs. Meir" Discrepancy

The strongest friction emerges in the case of the ash-shovel (חתה של גחלים). Rabbi Meir argues that even if the spoon is missing, the tool remains susceptible because it is still "like a hammer." The Sages, however, rule it clean. Why the discrepancy? If we follow the logic of the earlier Mishnah that a makhol remains susceptible due to its point, why does the ash-shovel fail the test?

The Terutz: Intent and Designation

The answer lies in the ma'aseh (nature of the act). A makhol or zomalister has two distinct, independent functions designed into the metal itself. A hammer, however, is a singular shm (name/designation). When the spoon of an ash-shovel is lost, the remaining shaft is not a "secondary tool"—it is merely a piece of scrap metal that resembles a hammer but was never designed to function as one. The Sages apply a strict shm ha-keili test: if the remaining part lacks a specific, independent functional designation, it reverts to the status of raw material, regardless of its potential for ad-hoc reuse.

Intertext

• Isaiah 7:25: The term ma'ader (mattock) cited by Tosafot Yom Tov provides the philological root for the tool’s design—a digging implement defined by its structural integrity.
• SA, Yoreh De'ah 196: The meta-halachic principle here mirrors the laws of mikva'ot and tuma'ah regarding the definition of a "vessel." If an object is rendered useless for its primary function, does the secondary function grant it a "residue of sanctity" (shirayim)? The Mishnah’s ruling on the needle (that if it is adapted to be a stretching-pin, it regains susceptibility) demonstrates that tuma'ah follows the current utility, not just the original manufacturing intent.

Psak/Practice

In modern application, this sugya informs the classification of "multi-tools." If a multi-functional item (like a Swiss Army knife or a kitchen gadget) loses one component, the psak follows the functional viability of the remnant. If the remaining part is sufficient to perform a distinct, recognized action (like a blade that can still cut), it retains its status as a keili. However, if the remnant is merely a handle or a broken shard—even if it could be used to pry or scrape—it is tahor, as it lacks the shm of a recognized tool.

Takeaway

The susceptibility of a vessel to impurity is a function of its ongoing capacity to serve human intent; once a tool's design no longer maps to a specific, usable function, its "vessel-hood" dissolves back into the dust of common matter.