Mishneh Torah, Sabbath 3

Sugya Map

• Core Issue: The scope of Shehiyah (leaving food on a fire) and Hazarah (returning food to a fire) on Shabbat.
• Primary Conflict: The tension between the leniency of davar ha-nishlam me-elav (a process completed on its own) and the Rabbinic decrees aimed at preventing hitui (stoking coals).
• Nafka Mina: Can one return a pot to a fire on Shabbat? Can one leave partially cooked food on a stove? Does the Kopach (single-pot range) function like a Kirah (double-pot range) or an Tanur (oven)?
• Primary Sources: Shabbat 18a–38b; Mishneh Torah, Hilchot Shabbat 3:1–11; Tur/Shulchan Aruch, Orach Chayim 253–254.

Text Snapshot

• MT Shabbat 3:1: "It is permissible to begin the performance of a labor on Friday, even though the labor is completed on its own accord on the Sabbath itself... for the prohibition against work applies only on the Sabbath itself."
  • Leshon Nuance: The Rambam uses "מִתְקַיֶּמֶת מֵאֵלֶיהָ" (completed on its own). The Ohr Sameach notes this reflects the School of Hillel’s position, rejecting the Shammaite view of Shevitat Kelim (utensils must rest).
• MT Shabbat 3:10: "Whenever [food] is permitted to be left on a fire, if it was taken from [the fire] on the Sabbath, it is forbidden to return it to its place."
  • Dikduk: The Rambam’s use of "אסור להחזירו" establishes a categorical prohibition. The Maggid Mishneh clarifies that this is a separate decree from Shehiyah, rooted in the appearance of cooking (mi-chazi ke-mevashel).

Readings

1. The Ohr Sameach (3:1:1)

The Ohr Sameach provides a foundational lomdus on the distinction between Shehiyah and Hazarah. He posits two reasons for the prohibition of Hazarah: (a) Shema yahaté (lest one stoke the coals), and (b) Mi-chazi ke-mevashel (it looks like one is cooking). He argues that while Shehiyah involves food that remains hot, Hazarah carries the risk that the food cooled down, necessitating the stoking of coals. Crucially, the Ohr Sameach argues that the Rambam’s stringency—forbidding Hazarah even when the food is fully cooked—is because the Rambam holds yesh bishul achar bishul (there is a prohibition of cooking after cooking) until the food is fully prepared. Thus, if one returns the pot, one appears to be performing the prohibited act of cooking.

2. The Tzafnat Pa’neach (3:10:1)

The Rogatchover Gaon (Tzafnat Pa’neach) focuses on the physical geography of the range. He notes that the prohibition against Hazarah applies to placing the pot inside the range (tokhah), but semichah (placing it adjacent) is permitted, provided the fire is covered or the range is fueled by straw (kash u-gavba). He distinguishes between the Kopach and the Kirah, asserting that the Kopach functions as an oven due to its heat retention, regardless of whether it is swept or covered. His chiddush is that the concern is not merely the fire itself, but the hevel (trapped heat) inherent in the structure of the Kopach.

Friction

The Kushya: A major contradiction exists between the Rambam’s leniency in 3:1—allowing a process to complete itself—and his stringency in 3:10, where he forbids returning a pot even if it is fully cooked. If the work is already "done" (the food is cooked), why does the appearance of cooking (mi-chazi ke-mevashel) trigger a prohibition? The Ra'avad famously protests here, arguing that if the food is fully cooked, there is no ma’aseh (act) of cooking, and the decree should not apply.

The Terutz: The Maggid Mishneh defends the Rambam by invoking the Shabbat 38a sugya: the Sages were concerned that if they permitted Hazarah for fully cooked food, people would become lax and return undercooked food to the fire, leading to a Torah-level violation (d’oraita). The Ohr Sameach adds that for the Rambam, the very act of returning the pot to the heat source is categorized as the beginning of a process. Even if the food is technically cooked, the intent to utilize the heat of the fire transforms the act into one of "cooking" in the eyes of the law.

Intertext

• SA Orach Chayim 253:1: The Shulchan Aruch codifies the Rambam, while the Rema introduces the Ashkenazic leniency regarding food that is me-vushal kol tzorko (cooked to completion), diverging from the Rambam's stricter requirement.
• Yerushalmi Shabbat 4:3: The debate regarding whether the Kopach requires the same safeguards as the Tanur is rooted in the Yerushalmi’s concern for hevel (trapped heat). This parallels the Mishneh Torah’s focus on the intensity of the heat source rather than just the presence of coals.

Psak/Practice

The Rambam’s heuristic is strict: Hazarah is forbidden unless the range is grufah (swept) and ktumah (covered) and the food has not been placed on the ground.

• Modern Heuristic: In contemporary households, the use of a blech acts as the ktumah (covering). However, one must ensure the blech is placed before Shabbat. If a pot is removed, it cannot be returned if it touched the ground or if the user had no intention of returning it. The Rambam’s rigor regarding hazarah serves as a "fence" to ensure that the sanctity of the Shabbat is not compromised by the active management of heat.

Takeaway

The Rambam teaches that the "completion" of a process is not a license to interact with the fire on Shabbat; the Sages prioritize the potential for prohibited activity (stoking coals) over the objective status of the food.