Mishnah Kelim 13:8-14:1

Sugya Map: The Ontology of "Broken" Metal

• Core Issue: Does the functional utility of a remnant determine the ritual status (taharah/tumah) of a metal vessel, or is it the structural integrity of the whole?
• Nafka Mina: Whether a broken instrument (e.g., a toothless comb or a snapped key) retains its status as a kli (vessel) based on residual utility or if it defaults to tahor upon losing its original form.
• Primary Sources: Mishnah Kelim 13:8, Mishnah Kelim 14:1, Yevamot 43a.

Text Snapshot

Mishnah Kelim 13:8: "A wool-comb: if one tooth out of every two is missing it is clean. If three consecutive teeth remained, it is susceptible to impurity. If the outermost tooth was one of them, the comb is clean."

• Nuance: Note the distinction between nisheru (remained) and nitalu (removed). The Mishnah is not merely counting teeth; it is measuring the functional threshold of the tool. The "outermost" tooth (ha-chitzonah) is structurally distinct, implying that location determines utility as much as quantity.

Readings

• Rash MiShantz: Argues that the susceptibility of a wool-comb depends on the alignment of the teeth. He notes that the "internal" (govei) teeth are secondary to the "external" (baraita) ones, which handle the bulk of the work. If the primary teeth are compromised, the vessel’s kli status dissolves.
• Rambam (Comm. to Kelim 13:8): Emphasizes the teleological nature of the vessel. If a part is repurposed (e.g., a comb tooth turned into a needle or lamp-pick), it regains susceptibility because it has been assigned a new function. The object is defined by its hakhsharah (adaptation), not its original manufacture.

Friction

• Kushya: If the status of a vessel is dependent on its function, why does the Mishnah rule that a "broken" metal vessel is tahor (as per Joshua in Mishnah Kelim 14:1) even if the fragment could theoretically still be used for a minor task?
• Terutz: The status of kli requires a threshold of melakhah (work). If the vessel is broken, it loses its identity as the "original" tool. Unless the owner actively adapts the fragment for a new, specific, and recognized function (as Rambam notes), the fragment is legally "nothing"—a piece of scrap metal, not a vessel.

Intertext

• Compare with Shulchan Arukh, Orach Chayim 308:4, where the definition of a "vessel" determines if it is muktzeh. The halachic focus on hakhsharat kli (preparation of a vessel) mirrors the Kelim requirement that a tool must reach a minimum size/utility to be susceptible.

Psak/Practice

The meta-psak heuristic here is "functional reductionism." In contemporary halacha, this informs how we view broken electronics or damaged appliances: if the primary mechanism is broken, the object is no longer a kli for the purpose of ritual laws, unless it has been re-purposed for a different, distinct utility.

Takeaway

Metal objects are defined by their telos (purpose); once the structure that enables that purpose is compromised, the object returns to a state of ritual neutrality (taharah) unless a new, functional identity is imposed upon it.