וּבַיּוֹם֙ הַשְּׁבִיעִ֔י מִקְרָא־קֹ֖דֶשׁ יִהְיֶ֣ה לָכֶ֑ם כָּל־מְלֶ֥אכֶת עֲבֹדָ֖ה לֹ֥א תַעֲשֽׂוּ׃ (ס)
און אױפֿן זיבעטן טאָג זאָל זײַן אַ הײליקע צונױפֿרופֿונג בײַ אײַך; קײן דינסטאַרבעט זאָלט איר ניט טאָן.
Mishneh Torah, Positive Mitzvot
To rest on the seventh day of that feast, as it is said, “And on the seventh day, there shall be a holy convocation, (no work shall be done in them)” (Ex. 12:16).
Mishneh Torah, Positive Mitzvot
To rest on the first day of the Feast of Tabernacles, as it is said, “On the first day there shall be a holy convocation; (ye shall do no servile work therein)” (Lev. 23:35).