Pesachim 115a: Matzah and Maror Compatibility - When Mitzvos Conflict

Full Summary

This shiur provides a deep analysis of Pesachim 115a, focusing on the principle of 'mitzvos mevatalos zu es zu' - whether and when one mitzvah (מצוה) can nullify another when performed simultaneously. The central case examined is eating matzah and maror together during Pesach (פסח). The Gemara (גמרא) discusses a fundamental dispute: Hillel held that one should not eat matzah and maror together because of the principle that mitzvos nullify each other. The concern is that when eaten together, neither mitzvah is properly fulfilled. Rabbi Zweig examines the Rashbam's interpretation that this is connected to the concept of 'ta'am' (taste) - specifically that while one doesn't need to taste the matzah to fulfill the mitzvah, there are requirements regarding how the mitzvah can be performed. A crucial element of the discussion centers on the distinction between Torah (תורה)-level (d'oraisa) and Rabbinic (d'rabbanan) obligations. In Temple times, both matzah and maror were Torah obligations, but today matzah remains a Torah obligation while maror is only Rabbinic. The Gemara questions why a Rabbinic obligation (maror) should nullify a Torah obligation (matzah), leading to the principle that 'Rabbinic obligations can diminish Torah obligations' - not overcome them, but diminish their fulfillment. The shiur explores two major interpretations: Rashbam's view that the issue relates to the ability of the food item to provide taste (even if taste isn't required), and Tosafos (תוספות)'s approach that focuses on the physical act of chewing foods together, which prevents proper fulfillment. The analysis extends to practical halachic implications, including how we understand the custom of 'korech' (the Hillel sandwich) performed during the Pesach Seder. A significant portion examines Tosafos's innovative interpretation regarding the sequence of eating matzah and then performing korech. Tosafos argues that even when eating matzah first (fulfilling the Torah obligation), the subsequent korech doesn't create a problem of mitzvos nullifying each other because both the matzah and maror in the korech are now Rabbinic obligations (the matzah being a 'zecher l'mikdash' - remembrance of the Temple). The discussion concludes with textual analysis of Rav Ashi's statement and the meaning of 'afilu' (even), questioning the precise understanding of when mitzvos can be performed together versus separately, and the implications for our current Pesach practices.