שֵׁ֣שֶׁת יָמִים֮ תֵּעָשֶׂ֣ה מְלָאכָה֒ וּבַיּ֣וֹם הַשְּׁבִיעִ֗י שַׁבַּ֤ת שַׁבָּתוֹן֙ מִקְרָא־קֹ֔דֶשׁ כָּל־מְלָאכָ֖ה לֹ֣א תַעֲשׂ֑וּ שַׁבָּ֥ת הִוא֙ לַֽיהוָ֔ה בְּכֹ֖ל מֽוֹשְׁבֹתֵיכֶֽם׃ (פ)
Seis dias se fará trabalho, mas no sétimo dia há um Shabat de completo descanso, uma santa convocação; nenhum trabalho servil fareis; é um Shabat para Hashem em todas as vossas habitações." {פ}
Tosefta Rosh Hashanah
Rabbi Yehuda says [in the name of] Rabbi Eliezer: "A Sabbath of complete rest" (Lev. 23:3) -- that is the Sanctification of the Day; "a reminder" (ibid.) -- that is the Remembrances; "trumpet blasts" (ibid.) -- that is the Shofrot; "a holy convocation" -- that means to sanctify it [by abstaining from work]. Said to him Rabbi Akiva, for what reason does the verse not say, a "Shabbaton of rest"? Because it already mentions "rest"*i.e., the root word for "rest" is already contained in "Shabbaton" and need not be midrashically derived. Rather, "a reminder" -- that is Remembrances; "trumpet blasts" -- that is Shofrot; "a holy convocation" -- that is the Sanctification of the Day.