Shemot 20:11

וינח ביום השביעי AND HE RESTED ON THE SEVENTH DAY — If one may say so, He recorded rest about Himself (recorded that He rested) to teach from this an inference à fortiori as regards a human being whose work is performed only by labour and toil — that he should rest on the Sabbath day (Mekhilta). ברך… ויקדשהו HE BLESSED … AND SANCTIFIED IT — He blessed it through the Manna by giving a double portion on the sixth day — “double bread”; and He sanctified it through the Manna in that on it none fell (Mekhilta; cf. Rashi on Genesis 2:3).

כִּ֣י שֵֽׁשֶׁת־יָמִים֩ עָשָׂ֨ה יְהֹוָ֜ה אֶת־הַשָּׁמַ֣יִם וְאֶת־הָאָ֗רֶץ אֶת־הַיָּם֙ וְאֶת־כׇּל־אֲשֶׁר־בָּ֔ם וַיָּ֖נַח בַּיּ֣וֹם הַשְּׁבִיעִ֑י עַל־כֵּ֗ן בֵּרַ֧ךְ יְהֹוָ֛ה אֶת־י֥וֹם הַשַּׁבָּ֖ת וַֽיְקַדְּשֵֽׁהוּ׃ {ס}        

for in six days the Lord made heaven and earth, the sea, and all that is in them, and rested on the seventh day: therefore the Lord blessed the sabbath day, and hallowed it.