#128 The First Night of Sukos
In addition to the mitzvah of sitting in the Sukah throughout the Yom Tov of Sukos, it is a mitzvah de’oreisa (a mitzvah from the Torah) to eat a kezayis of challah, or bread, on the first night of Sukos in the sukah. This is a similar mitzvah to the mitzvah of eating a kezayis of matzah on the first night of Pesach. The kezayis of bread in the sukah should be eaten after nightfall, and concluded by chatzos. In addition, this kezayis should be eaten within a time span known as kedei achilas pras, preferably within three minutes. If that is not possible, then within four minutes; there are also other more lenient time frames, if necessary. Even people who are mitztaer, experiencing discomfort, and are exempt from the mitzvah of Sukah, and even if it is raining, one should ensure to fulfill this very special mitzvah de’oraisa. Outside of Eretz Yisroel where Yom Tov is celebrated for two days, this mitzvah—-albeit with some leniencies—applies on a de’rabbonan level on the second night of Sukos.