Mishneh Torah, Leavened and Unleavened Bread 4

Sugya Map

• Issue: The scope of Ba’al Yera’eh (seeing) and Ba’al Yimatzei (finding) chametz.
• Nafka Mina: Does the prohibition require physical proximity, or is it a function of legal ownership?
• Primary Sources: Exodus 12:19, Exodus 13:7, Pesachim 5b-6a, Mishneh Torah, Hilchot Chametz U’Matzah 4:1-12.

Text Snapshot

Rambam Hilchot Chametz U’Matzah 4:1 writes: "Perhaps if it were buried... he would not transgress... The Torah states 'leaven should not be found in your homes,' [implying] even if it is buried or entrusted."

• Nuance: The Rambam shifts the focus from the visual act (seeing) to the legal domain (your homes). The "home" acts as an extension of the person’s authority, not merely a physical structure.

Readings

• Ramban (Commentary on Exodus 12:19): Challenges the Rambam’s extension of ownership to a gentile’s home. He argues that if the chametz is in a gentile’s domain, the Jew cannot be said to "possess" it, effectively limiting the prohibition to the Jew’s own territory.
• Ohr Sameach (Hilchot Chametz 4:1): Analyzes the mechiltah and the tension between "seeing" (the owner's perception) and "finding" (the existence of the object). He suggests that the prohibition of chametz after Pesach—derived from the prohibition during Pesach—means that if the chametz never triggered a violation during the holiday (e.g., it belonged to a gentile), it never falls under the permanent prohibition (Assur B'hana'ah).

Friction

Kushya: If the prohibition is based on ownership, why does the Rambam require a 10-handbreadth partition when chametz is entrusted to a gentile Hilchot Chametz 4:2? If it’s not the Jew’s, why the stringency? Terutz: The partition is a gezeirah (rabbinic decree) to prevent the Jew from accidentally using the chametz. While the Torah definition hinges on legal responsibility, the Chachamim recognized that physical proximity poses an unavoidable risk of transgression.

Intertext

• SA Orach Chayim 440:1: Codifies the requirement to destroy chametz if the Jew accepts financial responsibility, effectively treating "liability" as "ownership."
• Bava Metzia 101a: The broader legal principle that "financial liability creates ownership" serves as the structural foundation for the Rambam's stringencies here.

Psak/Practice

The halacha differentiates between "legal ownership" (which mandates destruction) and "physical possession" (which necessitates partitions). In modern practice, we formalize the sale (Mechirat Chametz) to ensure the gentile becomes the legal owner, thereby removing the Jew’s liability, which is the necessary condition for avoiding Ba’al Yera'eh.

Takeaway

Ownership is the primary mechanism of the chametz prohibition; liability is its proxy. If you are responsible for the loss, you are responsible for the violation.