Arukh HaShulchan Yomi · Expert – Beit Midrash Analysis · Standard
Arukh HaShulchan, Orach Chaim 317:2-10
Sugya Map
The definition of the melakha of Koseir (tying) on Shabbat is one of the most conceptually elusive areas of Hilkhot Shabbat. The core halakhic inquiry centers on the parameters that elevate an act of tying from a permitted action to a Rabbinic prohibition (asur miderabanan), and ultimately to a capital biblical violation (chayav chatat).
Heuristically, the sugya is divided along two axes:
- The Structural Axis (Ma'aseh Uman vs. Kesher Hedyot): Is the knot a highly skilled, professional knot, or a simple, amateurish one?
- The Temporal Axis (Shel Kayama vs. Eino Shel Kayama): Is the knot intended to remain permanently, or is it temporary?
Nafka Minot (Practical and Conceptual Differences)
- The Skilled Temporary Knot: A professional weaver’s or sailor’s knot tied with the explicit intention of being untied within twenty-four hours. Is this biblically forbidden due to its structural complexity, or permitted because of its lack of permanence?
- The Permanent Simple Knot: A basic double-knot tied on a shoe or a garbage bag with the intention of leaving it intact indefinitely. Does the lack of professional craftsmanship strip it of its biblical status, or does its permanence make it a de'oraita violation?
- The Intermediate Timeframe: A knot tied to last for a week (e.g., seven days). Does this trigger a mid-tier Rabbinic status, or is the temporal evaluation strictly binary (either permanent or temporary)?
Primary Sources
- Talmudic Foundation: Shabbat 111b–112a, analyzing the Mishnah's list of permitted and forbidden knots.
- Codifiers: Rambam, Mishneh Torah, Sabbath 10:1–7; Rosh, Rosh on Shabbat 15:1; Shulchan Arukh, Shulchan Arukh, Orach Chayim 317.
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Text Snapshot
The foundational text for our analysis is the Arukh HaShulchan, written by R’ Yechiel Michel Epstein. In Orach Chaim 317:2-4, he addresses the underlying mechanics of the melakha:
"ודע דבעניין קשרים נבוכו בו גדולי הראשונים והאחרונים... דעת הרמב"ם ז"ל בפרק י' שאינו חייב מן התורה אלא בקשר שהוא מעשה אומן וגם הוא של קיימא, אבל קשר שהוא מעשה אומן ואינו של קיימא, או שהוא של קיימא ואינו מעשה אומן – פטור אבל אסור. וקשר שאינו מעשה אומן ואינו של קיימא – מותר לכתחילה... אבל דעת רש"י והרא"ש והטור אינו כן, אלא כל שהוא של קיימא, אף על פי שאינו מעשה אומן – חייב חטאת..."[^1]
Philological and Lomdish Nuance
The Arukh HaShulchan employs the phrase "נבוכו בו גדולי הראשונים" (the great early authorities were perplexed by this), signaling that we are not merely dealing with a localized dispute, but with a fundamental clash of definitions. Note his precise formulation: "חייב מן התורה אלא בקשר שהוא מעשה אומן וגם הוא של קיימא" (one is not biblically liable unless the knot is a professional work and also permanent). He isolates the conjunction "and also" (ve-gam) to demonstrate that according to the Rambam, the biblical prohibition requires a simultaneous confluence of two distinct, independent variables. Conversely, for Rashi and the Rosh, the structural nature of the knot (uman) is a secondary detail; the primary, defining metric of Koseir is its permanence (kayama).
Readings
To understand how the Arukh HaShulchan arrives at his synthesis, we must deconstruct the positions of the Rishonim and earlier Acharonim.
┌─────────────────────────────────────────┐
│ Core Criteria for Biblical Tying │
└─────────────────────────────────────────┘
│
┌──────────────────────┴──────────────────────┐
▼ ▼
┌─────────────────────┐ ┌─────────────────────┐
│ Rashi/Rosh/Tur: │ │ Rambam's Taxonomy: │
│ Durability Only │ │ Dual-Criteria │
└─────────────────────┘ └─────────────────────┘
│ │
┌───────┴───────┐ ┌───────┴───────┐
▼ ▼ ▼ ▼
Permanent Permanent Uman & Kayama Any Other
(Kayama) (Non-Uman) Simultaneously Combination
= De'oraita = De'oraita = De'oraita = Rabbinic/Mutar
1. Rashi and the Tosafists: The Durability Thesis
Rashi Shabbat 111b s.v. "Ksharim she'chayavin" argues that the essence of Koseir is the creation of a durable connection. If a knot is meant to remain permanently (le-olam), it mimics the work of the weavers in the Mishkan who tied threads permanently.
- The Mechanism: The act of tying only achieves the status of a Melakha if it creates a permanent physical change or long-term utility. The level of skill required is irrelevant to the biblical definition of the act. If an ordinary person ties a clumsy double-knot on a leather strap and intends to leave it there forever, they have violated a biblical prohibition.
- The Tosafot Challenge: Tosafot Shabbat 111b s.v. "Ve-ha-taneiy" challenge this by noting that certain knots, such as the knots of Camel-drivers (kesher gamalim) and Sailors (kesher sapanim), are explicitly singled out in the Mishnah as carrying biblical liability. If any permanent knot is biblically forbidden, why does the Mishnah specify these professional knots? Tosafot resolve this by explaining that the Mishnah refers to the typical, standard practices of the time; however, conceptually, any permanent knot is indeed biblically forbidden.
2. The Rambam: The Formalist Dual-Criteria Thesis
The Rambam Mishneh Torah, Sabbath 10:1 rejects the singular focus on permanence. He constructs a highly structured, formalistic taxonomy based on two criteria: the skill of the execution (uman vs. hedyot) and the duration of the knot (kayama vs. eino shel kayama).
- The Matrix:
- Biblically Forbidden (Chayav): A professional knot (kesher uman) that is permanent (shel kayama).
- Rabbinically Forbidden (Patur Avel Asur):
- A professional knot (kesher uman) that is temporary (eino shel kayama).
- A layman's knot (kesher hedyot) that is permanent (shel kayama).
- Permitted (Mutar Lekhatchila): A layman's knot (kesher hedyot) that is temporary (eino shel kayama).
- The Conceptual Basis: Why does the Rambam require both? For the Rambam, a Melakha on Shabbat is defined by its Melechet Machashevet (purposeful, skilled labor). An unskilled act, even if permanent, lacks the formal quality of craftsmanship. Conversely, a highly skilled act that is only temporary lacks the durability required for a constructive creative act (Tikkun). Only when craftsmanship meets permanence do we find a biblical violation of Koseir.[^2]
3. The Beit Yosef and Shulchan Arukh: The Hybrid Integration
In Shulchan Arukh, Orach Chayim 317:1, Maran Yosef Karo codifies the Rambam’s position verbatim: only a professional knot that is permanent carries biblical liability. However, in Shulchan Arukh, Orach Chayim 317:3, he introduces the opinion of the Rosh and Tur regarding the timeline of "permanence." This creates a conceptual tension: if we rule like the Rambam, why do we need to define the exact timelines of permanence for a layman's knot, if a layman's knot can never be biblically forbidden anyway?
The Rema Shulchan Arukh, Orach Chayim 317:1 immediately adds that the Ashkenazic custom is stringently aligned with Rashi and the Rosh: any knot that is shel kayama (permanent) is treated as a biblical concern, regardless of whether it is a professional knot or a simple layman's knot.
4. The Arukh HaShulchan: Re-conceptualizing "Uman" and "Kayama"
R’ Yechiel Michel Epstein (317:4-7) steps into this conceptual landscape to resolve the underlying confusion. He offers three main insights that redefine how we understand these categories:
A. Defining "Kesher Uman" (Professional Knot)
The Arukh HaShulchan argues that an uman knot is not merely a "neat" knot. Rather, it is a knot whose structural integrity relies on specialized mechanical principles. A weaver’s knot or a sailor’s hitch cannot be easily replicated by an untrained person; it requires training and precision.
On the other hand, a double-knot (kesher kaphul)—where one ties a simple single knot and then ties another single knot directly on top of it—is structurally basic. Even though it is tight and secure, it remains a kesher hedyot (layman's knot) because any child can tie it without instruction.
B. The Psychological Dimension of "Kayama" (Permanence)
How do we define "permanence"? The Arukh HaShulchan (317:8) asserts that "permanence" is not merely an objective measure of time, but a function of human intent (da'at). If a person ties a knot with the explicit intention of leaving it intact forever, it is immediately classified as shel kayama.
If they tie it with the intention of untying it eventually, but have no specific timeline in mind, its status depends on standard practice. This introduces a psychological element to the physical act of tying: the tier's state of mind changes the halakhic status of the physical structure they create.
C. The Three-Tier Temporal Classification
To reconcile the conflicting opinions, the Arukh HaShulchan (317:9) clarifies the timeframes:
- Short-term (Within 24 Hours): Any layman's knot tied with the intention of being untied within 24 hours is completely permitted (mutar lekhatchila).
- Mid-term (Between 24 Hours and 7 Days): A layman's knot intended to remain for more than a day, but less than seven days, is Rabbinically forbidden according to some opinions, while others permit it.
- Long-term (More than 7 Days): Any knot meant to remain for more than seven days is classified as shel kayama. According to Rashi and the Rosh (and the Rema's ruling for Ashkenazim), tying such a knot is a biblical concern. According to the Rambam, if it is a layman's knot, it is Rabbinically forbidden.
Friction
The integration of these different rulings by the Shulchan Arukh and Rema creates several conceptual difficulties (kushyot). Let us examine the sharpest contradiction in the sugya and how the Arukh HaShulchan resolves it.
The Kushya: The Internal Contradiction in Shulchan Arukh 317
In Shulchan Arukh, Orach Chayim 317:1, the Shulchan Arukh rules:
"הקושר קשר של קיימא והוא מעשה אומן, חייב חטאת... אבל קשר שהוא מעשה אומן ואינו של קיימא, או שהוא של קיימא ואינו מעשה אומן, פטור אבל אסור."[^3] (One who ties a permanent knot that is a professional work is biblically liable... but a professional knot that is not permanent, or a permanent knot that is not professional, is exempt but Rabbinically forbidden.)
Here, the Shulchan Arukh adopts the Rambam's view: a permanent layman's knot (kesher hedyot shel kayama) is only Rabbinically forbidden (patur aval asur).
However, in Shulchan Arukh, Orach Chayim 317:3, he writes:
"קשר שאינו של קיימא... אם עשוי להתירו בכל יום, מותר להתירו... ואם אינו עשוי להתירו בכל יום, אסור להתירו."[^4] (A knot that is not permanent... if it is made to be untied every day, it is permitted... but if it is not made to be untied every day, it is forbidden.)
This ruling is based on the Tur, who follows the Rosh. If the Shulchan Arukh holds like the Rambam that a layman's knot (kesher hedyot) is never biblically forbidden (even if permanent), why does he rule so stringently in Paragraph 3, forbidding any knot that is not untied daily? If it is a layman's knot, even if it lasts for several days, it should at most be Rabbinically forbidden to tie, and certainly not subject to such restrictive daily limits.
Furthermore, if the Shulchan Arukh classifications in Paragraph 1 are correct, then a layman's knot that is not permanent should be completely permitted (mutar lekhatchila). Why, then, does Paragraph 3 forbid untying or tying a knot that is meant to last for merely two or three days?
┌────────────────────────────────────────┐
│ The Shulchan Arukh Inner Contradiction │
└────────────────────────────────────────┘
│
┌──────────────────────┴──────────────────────┐
▼ ▼
┌───────────────────┐ ┌───────────────────┐
│ Paragraph 1: │ │ Paragraph 3: │
│ Adopts Rambam │ │ Adopts Rosh/Tur │
└───────────────────┘ └───────────────────┘
│ │
▼ ▼
Layman's knot + Permanent Layman's knot + Non-Daily
= Only Rabbinically Forbidden = Strictly Forbidden
(Implies temporary is mutar) (Limits "temporary" to 24h)
The Terutz of the Taz and Magen Avraham
To resolve this, the Turei Zahav (Taz) and Magen Avraham offer two different approaches:
- The Taz's Approach: The Taz Turei Zahav on Orach Chayim 317:1 argues that the Shulchan Arukh uses the term "permanent" (shel kayama) in two different ways. In Paragraph 1, "permanent" means forever (le-olam). Only a professional knot tied forever carries biblical liability. In Paragraph 3, when dealing with layman's knots, the Shulchan Arukh is defining the Rabbinic boundaries. To prevent people from tying truly permanent knots, the Sages forbade tying even a layman's knot if it is meant to remain for more than twenty-four hours.
- The Magen Avraham's Approach: The Magen Avraham Magen Avraham 317:4 suggests a different distinction. He argues that there are three categories of time:
- Tied for less than 24 hours: Completely permitted.
- Tied for more than 7 days: This is considered "permanent" (shel kayama). If it is a layman's knot, it is Rabbinically forbidden; if it is a professional knot, it is biblically forbidden.
- Tied for 1 to 7 days: This is a grey area. It is not "permanent," but it is also not "temporary." Therefore, it is Rabbinically forbidden to tie, even though it is a layman's knot.
The Arukh HaShulchan’s Resolution: The Subjective Intent Model
The Arukh HaShulchan (317:5-7) offers a elegant resolution that simplifies these distinctions. He argues that the entire debate hinges on how we understand the psychological intent of the person tying the knot (da'at adam).
According to the Arukh HaShulchan, the Rambam and the Rosh do not argue about the definition of a layman's knot; they argue about how we evaluate a person's intent when they tie a knot without a specific plan to untie it.
He writes:
"אלא ודאי דהכל תלוי לפי דעת האדם... אם דעתו להתירו בתוך ימו – הוה ליה אינו של קיימא ומותר. ואם דעתו שיעמוד כך לעולם – הוה ליה של קיימא וחייב או אסור..."[^5]
The Arukh HaShulchan explains that the Shulchan Arukh’s ruling in Paragraph 3 is not a separate stringency, but a practical application of Paragraph 1:
- If a person ties a layman's knot with the intention of untying it that same day, their intent is clear. It is a temporary knot, and it is completely permitted.
- If they tie it with the intention of leaving it for a few days, their intent is ambiguous. Because they have shown that they do not need to untie it immediately, we apply a Rabbinic safeguard. The Sages worried that if a person is allowed to tie a knot for three or four days, they might leave it indefinitely, which would violate a Rabbinic prohibition (according to the Rambam) or a biblical prohibition (according to Rashi).
- Therefore, the "daily" limit mentioned in Paragraph 3 is not an independent definition of "permanence." Rather, it is a Rabbinic fence (gezeirah) designed to protect the subjective boundary of human intent. By limiting permitted tying to knots that are untied daily, the Sages ensured that a person would only tie knots that are clearly and unambiguously temporary.
This approach resolves the contradiction. The Shulchan Arukh in Paragraph 1 defines the essential Torah laws of Koseir according to the Rambam. In Paragraph 3, he codifies the practical Rabbinic safeguards necessary to protect those boundaries in daily life, drawing on the Rosh's guidelines to define what counts as an unambiguously temporary knot.
Intertext
To fully understand the halakhic definition of a knot, we must look beyond the laws of Shabbat and examine how other areas of Halakha define a knot. Two key parallel sugyot are the laws of Tzitzit and the laws of Tefillin.
1. The Upper Knot of Tzitzit (Kesher Elyon)
In Menachot 38b, the Gemara discusses whether the upper knot of the Tzitzit (kesher elyon) is a biblical requirement:
"קשר העליון דאורייתא, שכן מצינו באורגי בגדי כהונה..." (The upper knot is a biblical requirement, as we find similarly among the weavers of the priestly garments...)
┌────────────────────────────────────────┐
│ The Tzitzit/Shabbat Intertext │
└────────────────────────────────────────┘
│
┌──────────────────────┴──────────────────────┐
▼ ▼
┌───────────────────┐ ┌───────────────────┐
│ Tzitzit Sugya: │ │ Shabbat Sugya: │
│ Menachot 38b │ │ Shabbat 111b│
└───────────────────┘ └───────────────────┘
│ │
▼ ▼
Double-knot is permanent Is a double-knot
and considered a "knot" "Uman" or "Hedyot"?
by Torah law. (Arukh HaShulchan: Hedyot)
This passage creates a conceptual challenge. If the upper knot of Tzitzit—which is a simple double-knot—is considered a "knot" by Torah law, then a simple double-knot must be structurally significant enough to be biblically recognized.
This seems to clash with the Rambam’s view that a layman's knot (kesher hedyot) is never biblically forbidden on Shabbat. If a double-knot is structurally significant enough to fulfill the biblical commandment of Tzitzit, why is it not structurally significant enough to trigger a biblical violation on Shabbat?
The Rishonim offer two ways to resolve this:
- The Rambam's Approach: The Rambam Mishneh Torah, Tzitzit 1:15 argues that the "upper knot" of Tzitzit is actually not a simple double-knot. Rather, it is a unique, professional wrap and knot that requires skill to make properly. Therefore, it fits his definition of a professional knot (kesher uman), satisfying both the laws of Tzitzit and his criteria for Shabbat.
- The Tosafot/Rosh Approach: Tosafot argue that the definition of a knot does not depend on its complexity. A simple double-knot is indeed a complete, functional knot. This supports their view on Shabbat: any knot that is permanent (shel kayama) is biblically forbidden, regardless of how simple it is to tie.
The Arukh HaShulchan (317:4) uses this parallel to clarify his definition of a double-knot. He notes that while a double-knot on Tzitzit is permanent, we cannot apply the laws of Tzitzit directly to Shabbat. On Shabbat, we require Melechet Machashevet—skilled creative labor. Even though a double-knot is strong enough to be halakhically recognized as a knot for Tzitzit, it still lacks the professional craftsmanship (umanut) required for a biblical violation on Shabbat according to the Rambam.
2. The Knot of the Tefillin (Kesher Shel Tefillin)
In Menachot 35b, the Gemara discusses the knots used to secure the Tefillin:
"קשר של תפילין הלכה למשה מסיני..." (The knot of the Tefillin is a law given to Moses at Sinai...)
The knots of the Tefillin (the Dalet on the head-tefillin and the Yod on the hand-tefillin) are highly specialized. They are tied in specific geometric shapes and are intended to remain in place permanently.
This provides a perfect example of a knot that meets all the criteria for a biblical violation on Shabbat:
- It is highly complex and requires specialized training to tie correctly (kesher uman).
- It is meant to remain intact for years (shel kayama).
If one were to tie a Tefillin knot on Shabbat, all authorities—including the Rambam, Rashi, the Rosh, and the Shulchan Arukh—would agree that this constitutes a biblical violation of Koseir.^6 The Arukh HaShulchan uses the Tefillin knot as the baseline example of a professional, permanent knot, contrasting it with simple everyday knots to show why most common actions do not rise to the level of a Torah violation.
Psak/Practice
How do these conceptual principles apply to modern situations? Let us analyze three common scenarios based on the Arukh HaShulchan's rulings.
┌─────────────────────────────────────────────────────────────────────────────┐
│ Modern Halakhic Applications │
├───────────────────┬──────────────────────────────────┬──────────────────────┤
│ Case │ Halakhic Status │ Practical Guidance │
├───────────────────┼──────────────────────────────────┼──────────────────────┤
│ Double-Knotting │ Permitted │ Must be intended to │
│ Shoes │ │ be untied within 24h │
├───────────────────┼──────────────────────────────────┼──────────────────────┤
│ Garbage Bag │ Strictly Forbidden (Rashi/Rosh) │ Use a single knot │
│ Double-Knots │ Rabbinically Forbidden (Rambam) │ or a bow/slipknot │
├───────────────────┼──────────────────────────────────┼──────────────────────┤
│ Plastic Twist- │ Permitted │ Do not twist tight │
│ Ties │ │ with intent to leave │
└───────────────────┴──────────────────────────────────┴──────────────────────┘
1. Double-Knotting Shoes
It is common practice to tie a single knot in shoelaces and then tie a second knot on top of it to keep them from coming undone. On Shabbat, is this permitted?
- The Analysis: A shoe double-knot is a layman's knot (kesher hedyot). Its halakhic status depends entirely on how long it is meant to stay tied. Since shoes are untied regularly—usually within twenty-four hours—the knot is clearly temporary (eino shel kayama).
- The Psak: Based on the Arukh HaShulchan (317:9), this is completely permitted (mutar lekhatchila), because it is a simple knot tied for less than twenty-four hours. However, if one plans to leave the shoes tied for more than a week, tying them on Shabbat would be forbidden.
2. Tying Garbage Bags
When preparing a garbage bag for disposal, people often tie the plastic drawstrings or the bag itself into a tight double-knot.
- The Analysis: Unlike shoelaces, a knot on a garbage bag is meant to remain tied forever; it will never be untied. Therefore, it is classified as permanent (shel kayama).
- According to Rashi and the Rosh (and the Rema's ruling for Ashkenazim), tying a permanent knot is a biblical concern, even if it is a simple layman's knot.
- According to the Rambam and the Shulchan Arukh, it is Rabbinically forbidden because it is a layman's knot tied permanently.
- The Psak: Tying a double-knot on a garbage bag on Shabbat is strictly forbidden. To seal a bag on Shabbat, one should tie a simple single knot (which is not structurally stable on its own and thus not classified as a complete knot) or a bow/slipknot, which can be easily untied with a single pull.
3. Plastic Twist-Ties
Modern packaging often uses plastic-coated metal twist-ties (such as those on bread bags). Does twisting these ties count as tying (Koseir)?
- The Analysis: A twist-tie does not involve interlacing two strands to form a knot. Instead, it relies on the physical bending of a metal wire to hold its shape.
- The Psak: Most contemporary authorities, following the principles outlined by the Arukh HaShulchan, rule that twist-ties do not fall under the category of Koseir because they do not form a structural knot. However, if one twists them very tightly with the intention of leaving them in place permanently, it may present a Rabbinic issue under the category of Binyan (building) or Metaken Keli (finishing a vessel). For temporary use, they are permitted.
Takeaway
The melakha of Koseir teaches us that on Shabbat, physical actions are defined by human intent. The Arukh HaShulchan demonstrates that a knot is not just a physical structure, but a reflection of our plans: when we tie a knot, our intent decides whether we have performed a creative act of permanence or a permitted act of daily life.
[^1]: Arukh HaShulchan, Orach Chayim 317:2-4. [^2]: Mishneh Torah, Sabbath 10:1. [^3]: Shulchan Arukh, Orach Chayim 317:1. [^4]: Shulchan Arukh, Orach Chayim 317:3. [^5]: Arukh HaShulchan, Orach Chayim 317:8. [^6]: Levush, Orach Chayim 317:1.
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