An apartment building in Washington D.C. with no place to put up a sukkah, so the meals are eaten in the shul sukkah. Rav Hai Gaon was asked about exactly this case, and he answered that one makes the bracha there but is not yotzei his chiyuv. That answer opens up what the mitzvah of yeshivas sukkah for all seven days really is, beyond the k'zayis of the first night.

In this episode:

- The Rambam's "ochel v'shoseh v'dar," the Rema's "yashen u'metayel," and what metayel actually means in a sukkah of zayin al zayin

- The sukkah takes the place of the dining room, living room and bedroom, but not the kitchen, and whether to set a tablecloth in the house

- The Ramban on "kol ha'ezrach b'Yisrael," and why the shul sukkah earns a bracha but not the mitzvah

- Why we make leishev basukkah every day of Sukkos but no bracha on matzah after the first night, and whether the other days carry a real chiyuv

- Sukkah or lulav when you can only have one, and whether a family member building the sukkah is mitzvah bo yoser mib'shlucho

Sources: Rambam Hilchos Sukkah 6:5-6, Shulchan Aruch and Rema OC 639, Hilchos Chag B'Chag (Rav Moshe Mordechai Karp), Mishnah Berurah, Pri Megadim, Eliyahu Rabbah, Mateh Efraim, Rashba (Beitzah 30), Sifra with Raavad and Rashash, Ritz Geiyas citing Rav Hai Gaon, Magen Avraham citing the Maharil, Tosafos Rabbeinu Yehuda MiShirleon (Brachos), Abudraham (Birkas Sukkah), Ba'al HaMa'or (end of Pesachim) with Gilyonei HaShas (Sukkah 27), Chasam Sofer OC 639, Rav Shlomo Eiger (Sefer HaIkkarim), Ritva (Sukkah 27), K'tzei HaMateh, Pri Megadim 624-625. Machshavah section: Ramban (Emor 23:42).