Sefer HaChinukh Mitzvah 85
Can copy this into an AI, or connect the whole library to your assistant. For deeper learning, you can directly use the original seforim, sites, and apps.
מִצְוַת שְׁבִיתָה בְּשַׁבָּת – לִשְׁבֹּת (רמב"ם סהמ"צ עשה קנד) מִמְּלָאכָה בְּיוֹם הַשַּׁבָּת, שֶׁנֶּאֱמַר (שמות כג יב) וּבַיּוֹם הַשְּׁבִיעִי תִּשְׁבֹּת. כָּל עִנְיָנָהּ כָּתוּב לְמַעְלָה בַּלָּאו הַבָּא עַל זֶה. וְנִכְפְּלָה מִצְוַת שַׁבָּת עַד י"ב פְּעָמִים.
The commandment to rest on Shabbat: To rest from work on the Shabbat day, as it is stated (Exodus 23:12), “on the seventh day you shall rest” (Sefer HaMitzvot, Positive Commandments 154). All of its content is written above in the negative commandment that comes about it (Sefer HaChinukh 32). And the commandment of Shabbat is repeated up to twelve times.