Arukh HaShulchan, Orach Chaim 270:2-271:5

Sugya Map

The Arukh HaShulchan, Orach Chaim 270:2-271:5, navigates the intricate halachic landscape of Havdalah on Motza'ei Shabbat, focusing primarily on two intertwined axes: the zman (time) for its recitation and the impact of tosefet Shabbat on its commencement. The core sugya delves into the permissibility of early Havdalah, particularly for individuals with pressing needs, and the distinction between the end of Shabbat for melacha (prohibited labor) versus for Havdalah.

• Issue: What is the earliest permissible time for Havdalah? Can it be recited before tzeit hakochavim (nightfall)? How does the concept of tosefet Shabbat (extending Shabbat) apply to Motza'ei Shabbat and affect the timing of Havdalah and melacha?
• Nafka Mina(s):
  • The permissibility of eating or drinking on Motza'ei Shabbat before tzeit hakochavim for a choleh (sick person), yoldet (new mother), or katan (minor), or even a healthy individual with significant tzorech (need).
  • The timing for reciting the bracha of borei me'orei ha'eish (blessing on fire) within Havdalah.
  • The precise moment when melacha becomes permissible on Motza'ei Shabbat, and how this relates to Havdalah.
  • The underlying yesod regarding the nature of tosefet Shabbat – is it a din or a mere minhag for Motza'ei Shabbat? Does it apply uniformly to all Shabbat prohibitions and observances?
• Primary Sources:
  • Gemara: Berachot 33a-b (prohibition of eating before Havdalah); Pesachim 106a (source for Havdalah and its components); Eruvin 40b (source for tosefet Shabbat on Motza'ei Shabbat regarding melacha).
  • Rishonim: Rambam, Hilchot Shabbat 29:1-2; Tosafot, Berachot 27b (regarding zman tefillah and its potential link to Havdalah); Tosafot, Pesachim 106a (on borei me'orei ha'eish).
  • Acharonim: Tur and Shulchan Aruch, Orach Chaim 270-271; Magen Avraham, Orach Chaim 270:1, 271:1, 298:16; Taz, Orach Chaim 270:1, 271:1; Gra, Orach Chaim 270:1; Pri Megadim; Mishnah Berurah.
  • The Text Under Review: Arukh HaShulchan, Orach Chaim 270:2-271:5.

Text Snapshot

The Arukh HaShulchan engages with a specific chiddush of the Magen Avraham regarding early Havdalah, and then proceeds to clarify the scope of tosefet Shabbat. Two passages encapsulate these discussions:

1. Arukh HaShulchan, Orach Chaim 270:2:

   "והמגן אברהם סעיף קטן א' כתב, שאם יש לו צורך גדול, או שהוא חולה או יולדת, מותר להבדיל אפילו מפלג המנחה, ואף על פי שעדיין יום. דהואיל ואמרו התוספות בברכות (כ"ז ע"ב ד"ה מנחה) דזמן תפילת המנחה נמשך כל הלילה ויוצא בה ידי חובת תפילת ערבית, ואפילו הכי כל זמנה עד פלג המנחה, ה"נ לענין הבדלה, הואיל וזמן הבדלה מצאת הכוכבים עד עלות השחר, אפילו הכי זמנה הוא מפלג המנחה..."

   • Nuance: The phrase "והמגן אברהם סעיף קטן א' כתב" (And the Magen Avraham, sub-paragraph 1, wrote) immediately sets the stage for a lomdishe discussion, signaling that the Arukh HaShulchan is about to present and then critique a significant opinion. The Magen Avraham's yesod is a hekkesh (analogy) between the zman of tefillat Mincha and Havdalah. Just as tefillat Mincha can technically be recited until amud hashachar but its zman for tefillah b'zmanah is until plag hamincha (or shekiya), so too, Havdalah can be recited until Tuesday night (as per some opinions), but its zman might similarly extend from plag hamincha. The Arukh HaShulchan's subsequent "ולעניות דעתי צריכה עיון רבה" (and in my humble opinion, it requires great deliberation) demonstrates his characteristic rigor, directly challenging the Magen Avraham's bold assertion.

2. Arukh HaShulchan, Orach Chaim 271:2:

   "והתמיהני על המגן אברהם סעיף קטן א' שכתב דמצוה להוסיף בחול על קדש דהיינו להחמיר לעכב הבדלה מצאת הכוכבים, דהא איתא בפרק קמא דעירובין (מ' ע"ב) עבדיה דרב יוסף עבד עבידתא מפלגא דליליא... ומשמע דדוקא לענין מלאכה, אבל לענין הבדלה הוי ליה זמנה מיד בצאת הכוכבים..."

   • Nuance: Here, the Arukh HaShulchan expresses astonishment ("והתמיהני") at the Magen Avraham's application of tosefet Shabbat to Havdalah. The dikduk of "מצוה להוסיף בחול על קדש" (it is a mitzvah to add from the mundane to the holy) reflects the Magen Avraham's understanding that tosefet Shabbat on Motza'ei Shabbat is an active extension of holiness, thus delaying Havdalah. The Arukh HaShulchan immediately counters with a direct raya (proof) from Eruvin 40b, where Rav Yosef's servant performs melacha after midnight, implying that tosefet Shabbat primarily pertains to melacha, not to delaying the hotza'ah min hakodesh l'chol (bringing out from holy to mundane) that Havdalah performs. The distinction "דדוקא לענין מלאכה, אבל לענין הבדלה הוי ליה זמנה מיד בצאת הכוכבים" is the crux of the Arukh HaShulchan's argument, delineating a fundamental difference in the application of tosefet Shabbat.

Readings

The Arukh HaShulchan's discussion on Havdalah on Motza'ei Shabbat is a masterclass in engaging with the foundational Rishonim and the subsequent Acharonic debate, particularly between the Magen Avraham and the Gra/Taz.

1. Rambam: Hilchot Shabbat 29:1-2

The Rambam provides the bedrock understanding of Havdalah and its timing. He states clearly:

"אסור לאדם לאכול ולשתות משתחשך במוצאי שבת קודם שיבדיל. בין שהבדיל על היין בין שהבדיל על הכוס... ואפילו אינו עושה הבדלה אלא על הפת צריך שיאמר 'ברוך המבדיל בין קודש לחול' קודם שיאכל." (Rambam, Hilchot Shabbat 29:1)

And regarding melacha:

"אסור לעשות מלאכה במוצאי שבת עד שיצאו שלשה כוכבים בינוניים." (Rambam, Hilchot Shabbat 29:2)

• Chiddush/Stance: The Rambam establishes the general prohibition of eating/drinking before Havdalah and the prohibition of melacha until tzeit hakochavim. Crucially, he does not suggest any leniency for Havdalah before tzeit hakochavim. His psak implies a strict adherence to tzeit hakochavim as the onset of the zman Havdalah and the end of Shabbat for melacha. His formulation of "משתחשך במוצאי שבת" (from when it gets dark on Motza'ei Shabbat) for eating/drinking, contrasted with "עד שיצאו שלשה כוכבים בינוניים" for melacha, suggests that the obligation to refrain from eating might begin slightly earlier than the permissibility of melacha, but still not allowing for early Havdalah. The Arukh HaShulchan accepts the Rambam's premise that eating is forbidden before Havdalah (OC 270:2) and that melacha is forbidden until tzeit hakochavim (OC 271:1), but then probes the exceptions and nuances.

2. Magen Avraham: Orach Chaim 270:1 & 271:1

The Magen Avraham introduces a significant leniency and a novel interpretation of tosefet Shabbat.

• Early Havdalah (OC 270:1):

  "כתב המ"א ס"ק א' שאם יש לו צורך גדול או שהוא חולה או יולדת מותר לו להבדיל אפילו מפלג המנחה." (Magen Avraham, Orach Chaim 270:1, quoted by Arukh HaShulchan 270:2)

  • Chiddush/Stance: The Magen Avraham's chiddush is groundbreaking: he permits Havdalah from plag hamincha (approximately 1.25 sha'ot zmaniyot before shekiya) in cases of great need (e.g., choleh, yoldet). His reasoning, as cited by Arukh HaShulchan (OC 270:2), is based on an analogy to zman tefillat Mincha. He argues that just as tefillat Mincha can be recited until amud hashachar but its primary zman is until plag hamincha (according to Tosafot Berachot 27b), so too, Havdalah, which can be made until Tuesday night, might have an earlier "primary" zman from plag hamincha. This allows for flexibility in cases of tzorech.

• Tosefet Shabbat and Havdalah (OC 271:1):

  "וכן כתב המ"א ס"ק א' בשם מהרי"ל דמצוה להוסיף בחול על הקודש." (Magen Avraham, Orach Chaim 271:1, quoted by Arukh HaShulchan 271:1)

  • Chiddush/Stance: The Magen Avraham, citing the Mahari"l, asserts that tosefet Shabbat applies not only to melacha but also to Havdalah. This means one should delay Havdalah even beyond tzeit hakochavim to actively extend the holiness of Shabbat. This is an active din of chumra. This position stands in stark contrast to his leniency regarding early Havdalah for a choleh. The Magen Avraham views tosefet Shabbat as a positive act of extending holiness, thereby delaying the transition to chol for all purposes, including Havdalah.

3. Taz: Orach Chaim 270:1 & 271:1

The Taz generally takes a more stringent approach than the Magen Avraham, particularly on the timing of Havdalah and the application of tosefet Shabbat.

• Early Havdalah (OC 270:1):

  "כתב הט"ז ס"ק א' דלשון הרמב"ם משתחשך במוצאי שבת דהיינו מיד בצאת הכוכבים דהא לא סגי בלא הבדלה קודם אכילה... ודחה דברי המ"א דזמן הבדלה מצאת הכוכבים." (Taz, Orach Chaim 270:1, implicit in Arukh HaShulchan 270:3's critique of Magen Avraham)

  • Chiddush/Stance: The Taz strongly disagrees with the Magen Avraham's leniency for early Havdalah. He maintains that the zman for Havdalah begins specifically at tzeit hakochavim, and there is no basis to allow it earlier, even for a choleh. He interprets the Rambam's "משתחשך" as referring to tzeit hakochavim, emphasizing that the prohibition of eating before Havdalah takes effect only when Havdalah can actually be recited, i.e., at nightfall. His chiddush is a reaffirmation of the established zman for Havdalah, rejecting novel analogies.

• Tosefet Shabbat and Havdalah (OC 271:1):

  "כתב הט"ז ס"ק א' וכן דעת הגר"א דאין לחוש לתוספת שבת לענין הבדלה... דהא איתא בפרק קמא דעירובין (מ' ע"ב) דדוקא לענין מלאכה." (Taz, Orach Chaim 271:1, explicitly cited by Arukh HaShulchan 271:2-4)

  • Chiddush/Stance: The Taz explicitly rejects the Magen Avraham's view that tosefet Shabbat delays Havdalah. He argues that tosefet Shabbat on Motza'ei Shabbat applies exclusively to melacha, as evidenced by Eruvin 40b. Havdalah, by its nature, is an act of hotza'ah min hakodesh l'chol (bringing out from holy to mundane), which should occur as soon as Shabbat ends (tzeit hakochavim), not be delayed. His chiddush is a precise delineation of the scope of tosefet Shabbat, limiting its application to active prohibitions (like melacha) rather than delaying the ritual marking the end of holiness.

4. Gra: Orach Chaim 270:1 & 271:1

The Gra is known for his strict adherence to the p'shat (simple meaning) of the Gemara and Rishonim, often rejecting later leniencies.

• Early Havdalah (OC 270:1):

  "כתב הגר"א ס"ק א' על דברי המ"א דזמן הבדלה מצאת הכוכבים, ותמה על המ"א דהיאך יבדיל ביום כשעדיין קודש היום." (Gra, Orach Chaim 270:1, quoted by Arukh HaShulchan 270:3)

  • Chiddush/Stance: The Gra vehemently opposes the Magen Avraham's allowance for early Havdalah. His primary argument, as cited by the Arukh HaShulchan, is that it is fundamentally illogical to make Havdalah "ביום כשעדיין קודש היום" (during the day when the day is still holy). Havdalah is the act of distinguishing between holy and mundane, and if the day is still holy (i.e., Shabbat has not ended), there is no "mundane" to distinguish to. He emphasizes that the zman Havdalah is strictly tzeit hakochavim. The Gra's chiddush is a strong affirmation of the intrinsic nature of Havdalah as an act marking the transition, which cannot conceptually precede the transition itself.

• Tosefet Shabbat and Havdalah (OC 271:1):

  "וכבר כתבתי דגם הגר"א ס"ק א' מסכים לזה דלגבי הבדלה אין לחוש לתוספת שבת." (Gra, Orach Chaim 271:1, cited by Arukh HaShulchan 271:4)

  • Chiddush/Stance: Like the Taz, the Gra also rejects the Magen Avraham's application of tosefet Shabbat to Havdalah. He aligns with the view that tosefet Shabbat applies only to melacha, and Havdalah should be performed as soon as Shabbat truly ends at tzeit hakochavim. His chiddush reinforces the idea that tosefet Shabbat is a specific din for melacha and does not universally extend the kedusha of Shabbat to delay other mitzvot or transitions.

5. Arukh HaShulchan: Orach Chaim 270:2-271:5

The Arukh HaShulchan meticulously presents these views, often siding with the more stringent positions of the Gra and Taz while acknowledging the tzorech for leniency in specific circumstances.

• Chiddush/Stance:
  • Early Havdalah: The Arukh HaShulchan explicitly states "ולעניות דעתי צריכה עיון רבה" (OC 270:2) regarding the Magen Avraham's leniency for early Havdalah. He then quotes the Gra's strong rejection ("ותמה על המ"א דהיאך יבדיל ביום כשעדיין קודש היום") and concludes "וכן נראה לדעתי" (OC 270:3), unequivocally siding with the Gra that Havdalah cannot be made before tzeit hakochavim. However, in a nuanced move, he permits a choleh who cannot wait to eat to make Havdalah without borei me'orei ha'eish and besamim (OC 270:5). This is a compromise: the core bracha of Hamavdil is said, allowing eating, but the other brachot (which are more dependent on the full zman) are omitted or delayed. This demonstrates a balance between strict adherence to zman and the practical needs of a choleh.
  • Tosefet Shabbat: The Arukh HaShulchan unequivocally rejects the Magen Avraham's application of tosefet Shabbat to Havdalah. He expresses astonishment ("והתמיהני") at the Magen Avraham's position (OC 271:2), aligning with the Taz and Gra that tosefet Shabbat on Motza'ei Shabbat applies only to melacha. He cites Eruvin 40b as clear proof for this distinction. His chiddush is a firm psak that one should make Havdalah at tzeit hakochavim and not delay it further due to tosefet Shabbat (OC 271:4-5), thus clarifying a crucial point of contention among Acharonim and reflecting common practice.

In essence, the Arukh HaShulchan acts as a decisive posek, weighing the arguments and providing clear guidance, usually favoring the more traditional and stricter interpretations of zman and din, while also demonstrating empathy for tzorech gadol by offering pragmatic, albeit compromised, solutions.

Friction

The central kushya (difficulty) in this sugya stems from the inherent tension between two compelling halachic principles: the precise zman for Havdalah and the concept of tosefet Shabbat on one hand, and the imperative of tzorech gadol (great need) on the other.

The Strongest Kushya: The Magen Avraham's Conundrum – Early Havdalah vs. Delayed Havdalah

The most perplexing aspect, and the source of significant friction, lies in the Magen Avraham's seemingly contradictory positions. On one hand, he famously permits Havdalah as early as plag hamincha for a choleh or one with tzorech gadol (OC 270:1, as cited by Arukh HaShulchan 270:2). This is a radical leniency, allowing Havdalah while it is still "day." On the other hand, he asserts, based on the Mahari"l, that it is a mitzvah to delay Havdalah even beyond tzeit hakochavim due to tosefet Shabbat on Motza'ei Shabbat (OC 271:1, as cited by Arukh HaShulchan 271:1). This appears to be a stark chumra, actively extending Shabbat and delaying the hotza'ah min hakodesh l'chol.

• The Kushya: How can the Magen Avraham simultaneously argue for the earliest possible Havdalah (before shekiya) in one breath, and then for the latest possible Havdalah (after tzeit hakochavim plus tosefet Shabbat) in another? These positions seem to represent two opposing philosophies regarding the zman Havdalah and the sanctity of Shabbat's conclusion. If Havdalah can be made before tzeit hakochavim, it implies the zman is flexible and not strictly tied to nightfall. If tosefet Shabbat delays Havdalah even after tzeit hakochavim, it implies an extended sanctity that Havdalah must respect. The conceptual frameworks underpinning these two rulings seem to clash.
  • For early Havdalah, the Magen Avraham invokes a hekkesh to zman tefillah, suggesting that the latest zman for a mitzvah can imply an earlier permissible zman in cases of tzorech. This implies a more lenient understanding of "when Shabbat ends" for ritual purposes.
  • For delayed Havdalah due to tosefet Shabbat, he posits an active mitzvah to extend the holiness of Shabbat into chol. This implies a more stringent understanding of "when Shabbat ends" for ritual purposes.
  • The Arukh HaShulchan himself expresses "והתמיהני על המגן אברהם" (OC 271:2) regarding the latter point, indicating the difficulty.

The Best Terutz: Distinguishing Between Zman and Kedusha

The most compelling terutz to reconcile the Magen Avraham's positions, though not explicitly articulated by him in these sections, can be found by carefully distinguishing between the zman of Havdalah as a mitzvah and the kedusha (holiness) of Shabbat.

1. Re: Early Havdalah for Tzorech (OC 270:1):

   • The Magen Avraham's leniency for early Havdalah is rooted in the idea that the issur achilah (prohibition of eating) before Havdalah is mid'Rabbanan (Berachot 33a, as cited by Arukh HaShulchan 270:2), enacted "כדי שלא ישכחנה" (so one does not forget it). In cases of tzorech gadol, a Rabbinic prohibition can be suspended or relaxed. The Magen Avraham's hekkesh to zman tefillah is not to define the ideal zman for Havdalah, but to find a halachic window within which, b'sha'at hadchak (in a pressing situation), the mitzvah can technically be performed to alleviate the Rabbinic issur achilah. He is not saying Shabbat ends early; he is saying that the mitzvah of Havdalah has a broader zman for b'dieved purposes, and in tzorech gadol, one can tap into that broader zman. Thus, the kedusha of Shabbat remains until tzeit hakochavim, but the ritual of Havdalah can be preempted for tzorech. This is akin to other instances where Rabbinic gezeirot are relaxed in the face of tzorech.

2. Re: Delayed Havdalah due to Tosefet Shabbat (OC 271:1):

   • The Magen Avraham's application of tosefet Shabbat to Havdalah is based on the concept of actively extending the kedusha of Shabbat. This is not about the zman when Havdalah can technically be made, but about the ideal and chassidish way to conclude Shabbat. For the Magen Avraham, tosefet Shabbat on Motza'ei Shabbat is a positive din (or strong minhag) to "add from the mundane to the holy" (lehosif mechol al kodesh), thereby prolonging the period of sanctity. This means that even though tzeit hakochavim marks the formal end of Shabbat, one should refrain from immediately transitioning to chol for a short while as an act of piety, and this includes delaying Havdalah until this extended period of kedusha has passed.
   • This is not a contradiction, but rather two distinct applications of Halacha:
     • Leniency for Tzorech: When faced with a choleh or tzorech gadol, the Magen Avraham finds a b'dieved window to perform Havdalah early to allow eating, by leveraging the expansive zman of Havdalah as a mitzvah. This is a kula (leniency) driven by necessity.
     • Chumra for Kedusha: In the normal course, when there is no tzorech, the Magen Avraham advocates for a chumra (stringency) of tosefet Shabbat to actively extend the holiness, delaying Havdalah as an expression of reverence for Shabbat. This is a chumra driven by a desire for enhanced kedusha.

Essentially, the Magen Avraham operates on two different planes: one addresses the bare minimum zman for b'dieved mitzvah performance to avoid a Rabbinic issur, and the other addresses the l'chatchila (ideally) performance of mitzvot in a way that maximizes kedusha. The early Havdalah is a din of sha'at hadchak, while the delayed Havdalah for tosefet Shabbat is a din of hiddur mitzvah (beautifying the mitzvah) or a positive chumra.

The Arukh HaShulchan, while acknowledging the Magen Avraham's positions, largely rejects both of these chiddushim as normative psak. He sides with the Gra and Taz that the zman Havdalah is strictly tzeit hakochavim (OC 270:3) and that tosefet Shabbat on Motza'ei Shabbat applies only to melacha, not to delaying Havdalah (OC 271:2-4). His allowance for a choleh to make Havdalah early is a more limited concession, often without besamim and eish, reflecting a fundamental zman constraint for these brachot (OC 270:5).

Intertext

The sugya of Havdalah and tosefet Shabbat on Motza'ei Shabbat resonates deeply with several other halachic concepts, particularly those concerning the boundaries of holy time and the interaction between din d'Oraita (Torah law) and din d'Rabbanan (Rabbinic law).

1. Kiddush on Erev Shabbat and Tosefet Shabbat (Friday Evening)

The most direct and illuminating parallel is the sugya of Kiddush on Erev Shabbat and the concept of tosefet Shabbat on Friday afternoon.

• Gemara: Berachot 27b, Shabbat 23b.
• Issue: Can one make Kiddush and bring in Shabbat early (plag hamincha)?
• Dynamics:
  • Early Kiddush: The Gemara discusses the opinion of Rabbi Yehudah, who holds that one can accept Shabbat early, from plag hamincha (R' Yehudah's plag), and make Kiddush. This is the basis for minhagim in many communities to usher in Shabbat early, especially during long summer days, even before shekiya.
  • Tosefet Shabbat: On Erev Shabbat, tosefet Shabbat is generally understood as an obligation or minhag to add from chol to kodesh, thereby starting Shabbat before shekiya. This is a positive act of extending the kedusha.
• Comparison to Havdalah:
  • Asymmetry of Tosefet Shabbat: On Erev Shabbat, tosefet Shabbat is a proactive embrace of kedusha. On Motza'ei Shabbat, the Magen Avraham's view of tosefet Shabbat (extending kedusha beyond tzeit hakochavim) is a chumra to delay the departure of kedusha. The Arukh HaShulchan, Taz, and Gra, however, limit tosefet Shabbat on Motza'ei Shabbat to melacha only, distinguishing it from the all-encompassing tosefet Shabbat on Erev Shabbat. This highlights a fundamental asymmetry in how we approach the entry and exit from holiness. Entering is often flexible and can be hastened; exiting is generally fixed and often delayed only for melacha, not for ritual.
  • Early Kiddush vs. Early Havdalah: While early Kiddush is widely accepted l'chatchila (ideally) based on R' Yehudah, early Havdalah (before tzeit hakochavim) is highly contentious and generally rejected l'chatchila by most Rishonim and Acharonim (including the Arukh HaShulchan). The reason for this difference is profound: Kiddush is mekadesh (sanctifies) the day, and one can proactively choose to bring in kedusha. Havdalah, conversely, is lehotzi min hakodesh l'chol (to bring out from holy to mundane), which can only happen when the kedusha has naturally departed, i.e., at nightfall. One cannot force the end of kedusha any more than one can force the sun to set. The Magen Avraham's leniency for early Havdalah for a choleh is therefore a much bolder chiddush than early Kiddush, as it conceptually challenges the very nature of Havdalah. The Arukh HaShulchan's strong rejection of the Magen Avraham's early Havdalah while accepting early Kiddush (in other sections) underscores this fundamental difference.

2. Zman Kriyat Shema and Tefillah

The Magen Avraham's yesod for early Havdalah (OC 270:1) relies on an analogy to zman tefillah, specifically Tosafot Berachot 27b concerning Mincha.

• Gemara/Rishonim: Berachot 27b (Tosafot s.v. "מנחה" and "ואף על גב") discusses the zmanim for Mincha and Maariv.
• Dynamics: Tosafot there indeed discusses that while Mincha can technically be made until amud hashachar (theoretically overlapping with Maariv), its proper zman ends at plag hamincha or shekiya. The Gemara also discusses kriyat Shema and tefillah and their respective zmanim, some of which have le'chatchila and b'dieved windows.
• Comparison to Havdalah:
  • Arukh HaShulchan's Critique: The Arukh HaShulchan (OC 270:3) directly challenges the Magen Avraham's analogy. He argues that Tosafot on Berachot 27b is discussing the latest zman for Mincha (or the earliest zman for Maariv), not an earlier zman for Havdalah. The fact that Mincha can be b'dieved until amud hashachar does not mean it can be said before its designated zman (e.g., Mincha Gedola). Similarly, the fact that Havdalah can be made b'dieved until Tuesday night does not mean it can be made before Shabbat has truly ended.
  • Nature of Zman: This intertextual discussion highlights a core lomdishe distinction: is an expansive b'dieved zman (like for Havdalah until Tuesday, or Mincha until amud hashachar) a license to perform the mitzvah at any point within that window, or does the l'chatchila zman remain fixed, with the b'dieved window only available after the l'chatchila zman has passed? The Arukh HaShulchan, following the Gra, firmly believes the latter for Havdalah: the l'chatchila zman is tzeit hakochavim, and any earlier performance is conceptually flawed as Shabbat has not yet ended.

These parallels underscore the unique nature of Havdalah as an act of distinction and departure from holiness, which fundamentally differs from the proactive sanctification of Kiddush or the flexible zmanim of tefillah.

Psak/Practice

The Arukh HaShulchan's rigorous analysis in Orach Chaim 270:2-271:5 culminates in a clear and practical psak that largely aligns with mainstream Orthodox practice, while also carving out specific, limited leniencies for pressing needs.

1. General Timing of Havdalah: The Arukh HaShulchan decisively rules that the zman for Havdalah is tzeit hakochavim (OC 270:3). He rejects the Magen Avraham's leniency to make Havdalah from plag hamincha even for tzorech gadol, siding with the Gra who argues that one cannot make Havdalah while the day is still holy. This means that, l'chatchila, all observant Jews wait until tzeit hakochavim (typically based on Rabbeinu Tam's view, which calculates a longer twilight period) to recite Havdalah.
2. Tosefet Shabbat on Motza'ei Shabbat: He explicitly rejects the Magen Avraham's view that tosefet Shabbat delays Havdalah. The Arukh HaShulchan, following the Taz and Gra, rules that tosefet Shabbat on Motza'ei Shabbat applies only to melacha, not to Havdalah (OC 271:2-5). Therefore, once tzeit hakochavim has arrived, one should make Havdalah immediately and not delay it further out of a mistaken application of tosefet Shabbat. This is the accepted practice: Havdalah is made at the earliest appropriate time after tzeit hakochavim.
3. Leniency for a Choleh or Yoldet: While rejecting early Havdalah in toto, the Arukh HaShulchan offers a pragmatic kula for a choleh (sick person) or yoldet (new mother) who cannot wait until tzeit hakochavim to eat. In such a situation, one may make the core bracha of Hamavdil Bein Kodesh L'chol and then eat. However, the brachot on eish (fire) and besamim (spices), which have their own specific zmanim and purposes, should ideally be omitted or delayed until tzeit hakochavim if possible (OC 270:5). This is a meta-psak heuristic: prioritize the removal of a Rabbinic prohibition (eating before Havdalah) for pikuach nefesh or significant tzorech, even if it means compromising on the ideal performance of the full mitzvah. The Arukh HaShulchan emphasizes that even this leniency is only for eating, not for general melacha.
4. Timing of Borei Me'orei Ha'eish: The bracha on fire can be recited even before tzeit hakochavim (from shekiya) if one needs the light, as it is a bracha on the nehenah (benefit) of fire, which is independent of the zman of Havdalah as a whole (OC 270:4). This is a helpful distinction, allowing for practical use of light without necessitating a full Havdalah.

In practice, the Arukh HaShulchan's rulings are widely accepted. The general public waits for tzeit hakochavim for Havdalah and does not delay it further for tosefet Shabbat. For a choleh, the leniency to make a curtailed Havdalah to eat is a crucial hora'at sha'ah (temporary ruling for a specific situation), demonstrating the flexibility of Halacha in the face of human need, while still upholding the fundamental zman principles.

Takeaway

The Arukh HaShulchan meticulously charts the precise boundaries of Shabbat's conclusion, firmly establishing tzeit hakochavim as the non-negotiable zman for Havdalah, while pragmatically providing limited b'dieved leniencies for pikuach nefesh or tzorech gadol. This reflects the delicate balance in Halacha between rigorous adherence to zmanim and compassionate responsiveness to human need.