Every adult male is Biblically obligated to eat a k'zayis of bread in a succah on the first night of Succos. The Talmud(1) derives this obligation from the similar obligation of eating a k'zayis of matzah on the first night of Pesach. Since these two obligations are closely related, their halachos are similar in many respects. Like all mitzvos, this mitzvah, too, can only be properly fulfilled if there is prior planning and clear knowledge of all the requirements. Let us review the pertinent halachos»
Weekly-Halacha, Succos - 5763 - Torah.org
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