For the source text click/tap here: Sukkah 18
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Rabbi Meir and Rav Huna, son of Rav Yehoshua, attempt to understand why a particular sukka is fit when it has more than four handbreadths of unfit roofing. They decide that because there is four by four handbreadths of fit roofing in the middle, the unfit roofing is invalidated.
Abaye introduces ways that we can diminish the sukka that has a space of three handbreadths. He tells us to use the principle of lavud. The rabbis argue over whether lavud can account for a space in the middle of a sukka. Both rabbis look to halachot regarding carrying in an alleyway to provide rationale for their positions. Halacha related to ritual impurity and corpses and sky lights is invoked to further discuss the use of the principle of lavud.
We explore the symbolic aspects of the s'chach and Succot with 2 pieces: one by Prof Jeffrey Rubinstein (NYU) and , in contrast, Shifra Hendrie (Chabad).