וּבַיּוֹם֙ הַשְּׁבִיעִ֔י מִקְרָא־קֹ֖דֶשׁ יִהְיֶ֣ה לָכֶ֑ם כָּל־מְלֶ֥אכֶת עֲבֹדָ֖ה לֹ֥א תַעֲשֽׂוּ׃ (ס)
И в седьмой день у вас будет священное собрание; вы не должны совершать никаких рабских дел.
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).