Succah4: 8
הַהַלֵּל וְהַשִּׂמְחָה שְׁמוֹנָה כֵּיצַד? מְלַמֵּד שֶׁחַיָּב אָדָם בַּהַלֵּל וּבַשִּׂמְחָה וּבִכְבוֹד יוֹם טוֹב הָאַחֲרוֹן שֶׁל חַג, כִּשְׁאָר כָּל יְמוֹת הֶחָג.  סֻכָּה שִׁבְעָה כֵּיצַד? גָּמַר מִלֶּאֱכוֹל, לֹא יַתִּיר סֻכָּתוֹ; אֲבָל מוֹרִיד אֶת הַכֵּלִים מִן הַמִּנְחָה וּלְמַעְלָה, מִפְּנֵי כְבוֹד יוֹם טוֹב הָאַחֲרוֹן שֶׁל חַג.
How are [the recitation of] the Hallel and the [mitzvah of] rejoicing [done for] eight [days]? This teaches that a man is obligated in [the recitation of] the Hallel, in the [mitzvah of] rejoicing, and in [the] honor of the last Festival day of Succos, like all the other days of Succos.  How is [the mitzvah of] succah [observed for] seven [days]? When one has finished eating, he may not take apart his succah, but he may take down his utensils from Minchah time and later, in honor of the last Festival day of Succos.