שִׁבְעַ֣ת יָמִ֔ים תַּקְרִ֥יבוּ אִשֶּׁ֖ה לַיהוָ֑ה בַּיּ֣וֹם הַשְּׁמִינִ֡י מִקְרָא־קֹדֶשׁ֩ יִהְיֶ֨ה לָכֶ֜ם וְהִקְרַבְתֶּ֨ם אִשֶּׁ֤ה לַֽיהוָה֙ עֲצֶ֣רֶת הִ֔וא כָּל־מְלֶ֥אכֶת עֲבֹדָ֖ה לֹ֥א תַעֲשֽׂוּ׃
Selama tujuh hari kamu harus mempersembahkan korban api kepada Yang Mahakekal. Pada hari kedelapan haruslah ada bagimu pertemuan kudus, dan kamu harus mempersembahkan korban api kepada Yang Mahakekal. Itulah hari perhimpunan khidmat; janganlah kamu melakukan pekerjaan sehari-hari apa pun.
Mishneh Torah, Rest
These six days on which Scripture prohibited labor—being the first and seventh days of Passover, the first and eighth days of Sukkot, the day of Shavuot and the first day of the seventh month (Rosh Hashanah)—are called holidays (yamim tovim). The [degree of] cessation of work is equal in all of them, in that all work is prohibited except for labor that is for the sake of eating—as it is stated (Exodus 12:16), "only anything that is eaten by any person."
Mishneh Torah, Positive Mitzvot
To offer up an additional sacrifice on the Feast of Tabernacles, as it is said, “…. and ye shall offer a burnt-offering, a sacrifice made by fire of sweet savour” (Num. 29:12-34).