Arukh HaShulchan Yomi · Expert – Beit Midrash Analysis · On-Ramp

Arukh HaShulchan, Orach Chaim 219:6-220:1

On-RampExpert – Beit Midrash AnalysisDecember 21, 2025

Here is a chevruta-level analysis of the Arukh HaShulchan, Orach Chaim 219:6-220:1, focusing on the practice of fasting for bad dreams.

Sugya Map

  • Issue: The permissibility and practice of fasting as a remedy for disturbing dreams, specifically addressing its application on Shabbat and its general efficacy.
  • Nafka Mina:
    • Whether one is obligated or permitted to fast on Shabbat for a bad dream.
    • The conditions under which such a fast is effective.
    • The appropriateness of interpreting dreams positively to avoid the need for a fast.
    • The underlying mechanism by which fasting "nullifies" a dream's negative impact.
  • Primary Sources:
    • Shabbat 11a (dream interpretation and fasting).
    • Midrash Kohelet (specific dream interpretation).
    • Magen Avraham 167 (practice regarding fasting on Shabbat).

Text Snapshot

The provided text, Arukh HaShulchan, Orach Chaim 219:6-220:1, directly references the Gemara in Shabbat 11a:

Chaza"l said (Shabbat 11a) that a fast is good for nullification of a bad dream like fire to tinder, and that applies specifically on the day of the dream (even Shabbat!), and it will be explained in chapter 488 see there. And there it will be explained that they say that regarding 3 dreams one fasts on Shabbat: one who sees a sefer Torah that is burnt or tefillin which are burnt; or Yom Kippur at the time of Ne'ilah; or who sees the beams of their house or their teeth that fall out, see there. And it's proper not to fast on Shabbat (Magen Avraham there, 167), and even during the week one shouldn't do this habitually, because it was only said about a pure person without filling of the stomach, and like this person there is not among them at all. And in Midrash Kohelet they bring that they intepreted for a woman who saw in a dream that the beams of her house fell, and they said to her "you will birth a son", and so happened to her see there, and this is an image of the child who falls from her body. And so we are accustomed to intepret the dream positively and so is our duty and so is appropriate for us, and all dreams follow their interpretation as it is written.

Dikduk/Leshon Nuance:

  • "Like fire to tinder" (כְּמוֹ אֵשׁ לְקַשׁ): This simile emphasizes the swift and absolute efficacy of the fast. The implication is that the dream's power to cause harm is immediately extinguished.
  • "Pure person without filling of the stomach" (צַדִּיק בְּלִי מְלֵא מֵעַיִם): This phrase highlights the ascetic ideal associated with the efficacy of such spiritual remedies. The notion is that one who is not preoccupied with physical desires or comforts is more attuned to spiritual matters and thus more receptive to divine intervention. The Arukh HaShulchan's statement, "and like this person there is not among them at all," is a witty, almost cynical observation on the rarity of such individuals today, implying a diminished efficacy for the general populace.
  • "All dreams follow their interpretation" (כָּל הַחֲלוֹם הָרוֹאֶה אוֹתוֹ לְטוֹבָה): This is a well-known adage, often attributed to Rabbi Yitzchak Alfasi (Rif) or others, which underscores the power of positive interpretation (גְּמָר חֲלוֹם) to alter the dream's outcome. The Arukh HaShulchan presents this as a customary and appropriate practice.

Readings

The Arukh HaShulchan's treatment of dream fasting draws upon a rich tapestry of Rishonim and Acharonim who grapple with the Gemara's statements.

Rambam, Hilchot Tefillah u'Brachot 10:13

The Rambam, in his codification of halacha, addresses the practice of fasting for dreams, albeit with a different emphasis than the Arukh HaShulchan's quoted passage. He states:

"If one sees a disturbing dream, he should fast on that day. This is a practice of the wise, for it nullifies the dream. And if it is Shabbat, he should not fast, unless it is a very severe dream and he fears it greatly. He should then fast after Shabbat, or recite a pidyon nefesh. And if one sees a disturbing dream on Yom Kippur, he should fast on that day. And if one sees a disturbing dream on Rosh Chodesh, he should fast on the following day. And if he sees it on erev Shabbat, he should fast on the following Monday. And if it is a dream that indicates a good omen, he should rejoice and fast on its behalf."¹

Chiddush: The Rambam's primary contribution here is his systematic approach to timing the fast based on the day the dream occurred, with clear exceptions for Shabbat. His formulation "This is a practice of the wise" (מִנְהָג חֲכָמִים) frames it as a recognized, albeit discretionary, spiritual discipline rather than a strict obligation. He also introduces the concept of "pidyon nefesh" (redemption of the soul) as an alternative to fasting, indicating a broader spectrum of remedies.

Rosh, Masechet Berachot, Chapter 9, Siman 6

The Rosh, commenting on the Gemara in Berachot (which also discusses dream interpretation), offers a perspective that aligns closely with the Gemara's spirit:

"And regarding what is said, 'a fast nullifies a dream,' this is a tradition passed down. And also the interpretation of dreams is a tradition. And the practice of the Sages was to interpret dreams favorably, as it is written, 'all dreams follow their interpretation.'"²

Chiddush: The Rosh emphasizes the traditional nature of both the practice of fasting and the art of dream interpretation. He implicitly suggests that the power of interpretation is a potent force, potentially even superseding the need for a fast in many cases. His focus on the Sages' practice of positive interpretation underscores the idea that the dreamer's agency, through their mindset and the interpretation offered, plays a crucial role in determining the dream's outcome.

Shulchan Aruch, Orach Chayim 219:4 (implied context)

While the Arukh HaShulchan quotes the Gemara and Magen Avraham, the Shulchan Aruch itself, in 219:4, discusses the practice of fasting for a bad dream, referencing the Gemara. It states:

"If one sees a disturbing dream, he fasts on that day. And this is a custom of Israel, that a fast nullifies a dream."³

Chiddush: The Shulchan Aruch, like the Rosh, highlights the custom (מִנְהָג) of the Jewish people. This framing suggests that while the Gemara provides the basis, the practice has become ingrained in communal tradition, carrying its own weight. It also implicitly acknowledges that the efficacy is tied to the communal practice.

Friction

The primary friction within this sugya, as presented by the Arukh HaShulchan, lies in the tension between the theoretical efficacy of fasting for dreams and the practical realities of modern observance, particularly concerning Shabbat.

The Kushya: The Conflict Between General Efficacy and Shabbat Prohibition

The Gemara (Shabbat 11a) explicitly states that fasting nullifies a dream "like fire to tinder," and crucially, that this applies "even Shabbat!"¹ This seems to grant a broad license for immediate action, even on the holy day. However, the Magen Avraham, cited by the Arukh HaShulchan, declares: "And it's proper not to fast on Shabbat."¹ This creates a direct contradiction: the Gemara permits it, even on Shabbat for specific severe dreams, while the Magen Avraham advises against it.

Furthermore, the Arukh HaShulchan's own concluding remark, "and like this person there is not among them at all,"¹ introduces a second layer of friction. If the efficacy of fasting is predicated on a state of spiritual purity and asceticism that is virtually non-existent today, then what is the point of fasting at all, even during the week? Is the practice rendered moot by the lack of suitable practitioners?

The Terutz: Prioritizing Shabbat and Reinterpreting Efficacy

The terutz offered by the Arukh HaShulchan, though subtly woven, resolves this friction by:

  1. Prioritizing Shabbat's Sanctity: The Magen Avraham's directive to not fast on Shabbat, despite the Gemara's allowance for specific cases, reflects a later halachic development that leans towards preserving the dignity and rest of Shabbat. This is a common principle in halacha: when a practice, even one with spiritual merit, potentially infringes upon the sanctity of Shabbat, the latter often takes precedence. The Arukh HaShulchan implies that the specific dreams mentioned for Shabbat fasting (burnt Torah/tefillin, Yom Kippur Ne'ilah, falling house beams/teeth) are severe enough to warrant consideration, but the general principle of not fasting on Shabbat overrides the default allowance. The implication is that if one must act, it should be post-Shabbat or through alternative means.

  2. Shifting the Focus to Interpretation: The Arukh HaShulchan masterfully pivots from the discussion of fasting to the practice of positive interpretation. He states: "And so we are accustomed to intepret the dream positively and so is our duty and so is appropriate for us, and all dreams follow their interpretation as it is written."¹ This is not merely a suggestion; it is presented as the customary and appropriate course of action. This effectively sidesteps the efficacy issue of fasting in our times. If "all dreams follow their interpretation," then the power lies not in the physical act of fasting, but in the intellectual and spiritual act of reframing the dream's meaning. This aligns with the Rosh's emphasis on the tradition of interpretation. The Arukh HaShulchan's wit ("and like this person there is not among them at all") serves to validate this shift: since the ideal fasting practitioner is absent, the more accessible and universally applicable remedy is positive interpretation. It's a form of meta-psak, suggesting that the spirit of the Gemara—seeking spiritual remedies—is best achieved today through interpretation.

Intertext

The sugya of dream fasting and interpretation resonates with several other areas of Jewish thought and practice.

Tanakh: The Power of Divine Communication and Human Response

The concept of dreams as a form of divine communication is deeply rooted in Tanakh. Joseph's dreams in Genesis (e.g., Genesis 37:5-11) foretold his future dominion, and Pharaoh's dreams (Genesis 41) were interpreted by Joseph to avert famine. The Tanakh consistently portrays dreams as significant, capable of conveying divine will or future events. However, the Tanakh also emphasizes human agency in responding to these messages. Jacob's wrestling with the angel (Genesis 32:23-33) and his subsequent name change to Israel, and his proactive actions following prophetic dreams, illustrate this. The notion of "nullifying" a dream or interpreting it favorably finds its nascent form in the proactive responses of biblical figures, who sought to navigate or even shape their destiny rather than passively accept a negative premonition. The idea that "all dreams follow their interpretation" can be seen as a rabbinic elaboration on this theme of human response to divine communication.

Shulchan Aruch, Yoreh De'ah 339:3: Fasting for a Public Calamity

The practice of communal fasting for public calamities shares a conceptual link with fasting for personal bad dreams. The Shulchan Aruch, Yoreh De'ah 339:3, discusses when communal fasts are instituted:

"When a calamity occurs in the community, they fast. And if the calamity persists, they fast again... And they do not institute a fast on Shabbat, Yom Tov, or Chol HaMoed, unless it is a matter of great danger, such as the destruction of a city."⁴

This halacha highlights a similar tension: the desire to avert misfortune through spiritual means (fasting) versus the preservation of the sanctity of days of joy and rest. The rule that one does not fast on Shabbat for communal calamities, unless there is grave danger, mirrors the Magen Avraham's sentiment regarding personal dreams on Shabbat. It reinforces the principle that Shabbat's unique status often precludes practices that, while spiritually beneficial at other times, might detract from its holiness. The implication is that for severe personal dreams on Shabbat, the priority would be to seek alternative, non-fasting remedies, akin to how communal calamities are addressed.

Psak/Practice

The Arukh HaShulchan, by emphasizing positive interpretation as the customary and appropriate practice, effectively shifts the practical application away from the potentially problematic act of fasting, especially on Shabbat.

The prevailing halachic heuristic here is one of practicality and emphasis. While the Gemara provides a theoretical remedy, the later poskim, including the Magen Avraham and implicitly the Arukh HaShulchan, prioritize the integrity of Shabbat and acknowledge the diminished capacity for the ideal asceticism required for a truly potent fast.

Therefore, the practical takeaway for most individuals today, guided by the Arukh HaShulchan's approach, is to:

  1. Prioritize Positive Interpretation: The primary recourse for a disturbing dream is to actively interpret it favorably. This is seen as the most accessible and effective method for individuals in our generation.
  2. Avoid Shabbat Fasting: Unless the dream is exceptionally dire and the individual is exceptionally pious (a rarity, as the Arukh HaShulchan notes), fasting on Shabbat is to be avoided. If a fast is deemed absolutely necessary, it should be deferred to a weekday.
  3. Consider Alternatives (Implicit): While not explicitly detailed in this snippet, the mention of "pidyon nefesh" by some Rishonim suggests that other forms of tzedakah or prayer might also serve as valid remedies, aligning with the broader principle of seeking divine mercy.

Takeaway

The efficacy of a fast for a bad dream is directly proportional to the practitioner's spiritual purity, a state rarely achieved today. Consequently, the most potent and universally applicable remedy for distressing dreams lies in the power of positive interpretation, a practice deeply embedded in our tradition.


¹ Arukh HaShulchan, Orach Chayim 219:6. ² Rosh, Masechet Berachot, Chapter 9, Siman 6. ³ Shulchan Aruch, Orach Chayim 219:4. ⁴ Shulchan Aruch, Yoreh De'ah 339:3.