Today's daf is sponsored by Tina Lamm in memory of Asher Mechanic, Asher ben Avraham v'Rina. "In the zechut of all those he helped as a passionately devoted physician, may his neshama have an aliyah." And by Tova and David Kestenbaum to mark the shloshim of Tova's dear Uncle, Harav Reuven Pinchas ben Harav Chaim Yaakov v'Yehudit Bulka z"l. "He was a special Uncle to us and an extraordinary man. He was a Mekadesh Shem Shamayim in the way he spread Torah through his actions, lectures and books and through his efforts to make peace between people of all faiths. We miss him terribly." The gemara tries to clarify the details regarding the debate between Rabbi Eliezer and the rabbis regarding whether a mat of reeds can be used for s'chach or not and what the differences are between small/large mat, one intended for lying or sitting/s'chach/not intended for anything specific. Tannaitic sources that discuss different types of mats and their laws regarding impurity/s'chach. The second chapter begins with a debate regarding one who sleeps under a bed in a sukkah. Rabbi Shimon brings a story of Tavi, the Cannanite slave of Rabban Gamliel who slept under the bed in the sukkah since he was exempt from the mitzvah of sukkah