Arukh HaShulchan, Orach Chaim 253:19-25

Sugya Map

• Issue

  The permissibility of shehiyah (leaving food on a heat source before Shabbat to continue cooking) is limited by a gezeirah (rabbinic decree) lest one stir coals on Shabbat, thereby transgressing bishul (cooking)¹.

• Nafka Mina(s)

  Differentiating between types of ancient ovens (kirah, kupach, tanur) and fuel sources, which bear directly on the application of shehiyah rules and the gezeirah’s scope. This understanding is critical for applying these rules to modern cooking apparatus.

• Primary Sources

  Arukh HaShulchan, Orach Chaim 253:19-25; Rashi, Bava Batra 20a s.v. "u'v'kirah"²; Tur, Choshen Mishpat 155³; Nimukei Yosef, Bava Batra⁴; Yerushalmi, Shabbat 3:5 (cf. Kirah perek 1)⁵; Rambam, Hilchot Shabbat 3:4-5⁶.

Text Snapshot

The Arukh HaShulchan (AH) lays the groundwork for the gezeirah by stating: "הואיל ויש מחלוקת בפוסקים בענין זה, וגם אופן בישול שלהם היה שונה משלנו, צריך לפרש תחילה אופן בישול שלהם."⁷ (AH OC 253:20). This highlights the necessity of understanding ancient cooking methods. He then meticulously describes the kirah, kupach, and tanur – their structure, capacity, and heat retention, noting their openings were typically at the top, unlike modern ovens. He further details fuel types, from weak (straw) to strong (olive waste, wood), and their implications for bishul⁸.

Readings

• Arukh HaShulchan, Orach Chaim 253:19-25

  Chiddush: He argues that a precise, almost archaeological, understanding of the historical realia (cooking apparatus, fuel types) is not mere academic interest but an absolute prerequisite for correctly applying the halachot of shehiyah and the associated gezeirot. He makes explicit that modern psak requires this historical lens.

• Rambam, Hilchot Shabbat 3:4-5

  Chiddush: Rambam codifies the halachot of shehiyah by defining the specific characteristics of kirah and tanur, and the conditions (garuf - swept, katum - covered) under which food may be left on them. His psak implicitly relies on these distinctions.

Friction

• Kushya

  The AH notes a textual difficulty regarding the kirah: "יש קושיא על הטור ח"מ סוף סימן קנ"ה שמביא מהרשב"ם שהקירה נפתחה מן הצד. וכן נמוקי יוסף שם מביא כן מהירושלמי דקירה נעשית כשוכה..."⁹ (AH OC 253:20). This contradicts the AH's understanding that kirah openings were at the top.

• Terutz

  The AH resolves this by suggesting the Yerushalmi's "כשוכה" (like a dovecote) refers to the kirah's uniform width (equal top and bottom) rather than a side opening, thus reconciling it with his description of top-loading ancient ovens¹⁰.

Intertext

• Mishnah Shabbat 3:5: The fundamental Mishnah that introduces the distinctions between kirah and tanur regarding shehiyah, setting the stage for the gezeirah and its parameters¹¹.
• Gemara Shabbat 36b: Elaborates on the Mishnah, providing the source and rationale for the gezeirah of stirring coals and the conditions of garuf and katum¹².

Psak/Practice

The AH's rigorous analysis demonstrates that gezeirot are not abstract but intimately tied to the practical realities they address. For modern psak concerning shehiyah and chazarah on Shabbat, one must translate the ta'am ha'gezeirah (reason for the decree) from ancient kirah/tanur contexts to contemporary appliances (e.g., electric stoves, ovens, crock-pots) based on their functional similarity to the original halachic categories, rather than merely their names. This meta-psak heuristic demands an understanding of the underlying risk the gezeirah seeks to mitigate.

Takeaway

The Arukh HaShulchan illustrates that effective halachic application of gezeirot requires a deep, almost archaeological, understanding of the realia of the Sages. This detailed contextual analysis is crucial for deriving robust and applicable halacha in evolving technological landscapes.

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¹ Arukh HaShulchan, Orach Chaim 253:19. ² Rashi, Bava Batra 20a s.v. "u'v'kirah". ³ Tur, Choshen Mishpat 155. ⁴ Nimukei Yosef, Bava Batra 20a (as cited by AH OC 253:20). ⁵ Yerushalmi, Shabbat 3:5 (cf. Kirah perek 1, as cited by AH OC 253:20). ⁶ Rambam, Hilchot Shabbat 3:4-5. ⁷ Arukh HaShulchan, Orach Chaim 253:20. ⁸ Arukh HaShulchan, Orach Chaim 253:20-21. ⁹ Arukh HaShulchan, Orach Chaim 253:20. ¹⁰ Arukh HaShulchan, Orach Chaim 253:20. ¹¹ Mishnah, Shabbat 3:5. ¹² Talmud Bavli, Shabbat 36b.