Mishnah Kelim 17:8-9

Sugya Map

• Core Issue: The threshold of "usability" (שימוש) that renders a vessel susceptible to impurity (טומאה) versus the threshold of "brokenness" that renders it clean (טהור).
• Nafqa Mina: Determining if a vessel retains its keli status despite physical degradation (holes, wear, partial loss of function).
• Primary Sources: Mishnah Kelim 17:8-9, Berakhot 39a, Oholot 17:1, Sukkah 6a.

Text Snapshot

The Mishnah transitions from specific measurements to the ontology of the "moderate" (בינוני).

• Mishnah Kelim 17:8: "הרימון שאמרו--שלשה דבוקין זה עם זה." (The pomegranate of which they spoke — three attached to one another.)
• Mishnah Kelim 17:8: "הזית שאמרו--בינוני, האגורי." (The olive of which they spoke—a moderate one, the egori.)
• Nuance: The use of "בינוני" (moderate/medium) functions as the halachic anchor for all shiurim (measurements). The term egori (אגורי) is parsed by the Rash Rash on Kelim 17:8 citing Berakhot 39a: "ששמנו אגור בתוכו" (that [the juice] is stored/collected within it). The etymology emphasizes the functional capacity of the object to "hold" (אגור), mirroring the very definition of a keli (vessel).

Readings

1. Rambam’s Taxonomy of Shiurim

The Rambam Commentary on Mishnah Kelim 17:8 provides a meta-commentary on the nature of shiurim. He observes that the Torah’s "economy of measurement" is largely anchored in the kazayit (olive-bulk). By grounding the shiurim of Kelim (vessels) in the same physical dimensions as dietary prohibitions and tumah (impurity) transfers (like the kese'orah—barley-bulk—of a bone from a corpse), the Rambam posits a unified theory of physical reality in Halacha. A vessel is not defined by its ideal form, but by its capacity to "hold" or "transfer" the same quantities that define life and death in other areas of the Law. The chiddush here is that keli-status is a physiological capacity, not merely a functional one.

2. Rash MiShantz’s Functionalism

Rash MiShantz Rash on Kelim 17:8 focuses on the why of the definitions. Regarding the egori olive, he cites the Gemara’s explanation that it is "ready to emerge/collected" (מזומן לצאת). Unlike other fruits where the juice is absorbed into the flesh, the egori is defined by the fact that it retains its liquid content in a way that is distinctly "vessel-like." Rash thus shifts the focus from the static size of the object to the interaction between the object and its contents. A vessel is a vessel if it behaves like a container, regardless of whether it is a sophisticated artisan creation or a hollowed-out natural object.

Friction

The Kushya: The Paradox of the "Broken" Vessel

The tension in Mishnah Kelim 17:8 lies in the conflict between Rabban Gamaliel’s pragmatic definition and the Sages’ formalist approach. If a vessel "cannot hold liquids but can still hold excrements," it remains unclean. However, Rabban Gamaliel argues it is clean because "people do not usually keep one that is in such a condition."

The kushya is: Is keli-status determined by objective capacity (does it hold matter?) or subjective utility (does a human deem it useful?). If it holds excrement, it is physically functional; if it is socially discarded, is it still a keli?

The Terutz

The terutz lies in the distinction between ma'aseh (physical act) and kavanah (intention). As the Mishnah later notes regarding children: "in the case of children an act is valid though an intention is not." The Sages hold that the keli status is an inherent property of the object's geometry. Rabban Gamaliel, however, introduces a social-halachic threshold: if an object falls below the threshold of human utility (i.e., it is "broken" in the eyes of the market), it loses its susceptibility to tumah. The terutz is that there are two layers of Kelim: the physical (which the Sages track) and the functional-normative (which Rabban Gamaliel tracks). In the case of extreme degradation, the normative status overrides the physical capacity.

Intertext

• Oholot 17:1: The concept of "carrying" (masa) is linked to the thickness of an "ox goad." The Rambam Commentary on Mishnah Kelim 17:8 explicitly cross-references this, reinforcing that the shiurim of Kelim are not isolated to vessels; they are the standard units of physical interaction with the world of tumah.
• Berakhot 39a: The discussion of the egori olive provides the etymological link between "storage" and "vesselhood." The Gemara’s inquiry into why a specific fruit is chosen reveals that the Rabbis viewed the natural world as a template for the artificial world. A vessel is simply a human attempt to mimic the containment properties already present in nature.

Psak/Practice

In contemporary psak, the principles of Kelim regarding "brokenness" are rarely invoked for status, but they remain highly relevant in Hilchot Shabbat (e.g., the definition of a keli for the purposes of Muktzah or Melachah). The meta-heuristic is clear: Batul (nullified) utility equals Batul status. If an object is so degraded that a reasonable person would discard it, it is no longer a "vessel" for the purpose of the prohibition. The Rambam's insistence on the "moderate" (beinoini) serves as a reminder that Halacha prefers the standard, average human experience over the extreme or the rare.

Takeaway

Halachic identity is not defined by perfection, but by the threshold of continued utility. If it can still hold, it is still a vessel—unless it has been abandoned by the human gaze.