Leviticus 19:30

ומקדשי תיראו AND YE SHALL REVERE MY SANCTUARY — This implies that one should not enter it with his staff in hand or in his shoes, or with his money belt or with the dust on his feet (all signs of irreverence) (Sifra, Kedoshim, Chapter 7 9; Berakhot 54a; Yevamot 6b). But — says God — although I warn you with regard to the reverence due to the Sanctuary, yet — את שבתתי תשמרו YOU SHALL KEEP MY SABBATHS — not even the erection of the Sanctuary can set aside the Sabbath law (Sifra, Kedoshim, Chapter 7 7; Yevamot 6a; cf. Rashi on Exodus 35:2).

אֶת־שַׁבְּתֹתַ֣י תִּשְׁמֹ֔רוּ וּמִקְדָּשִׁ֖י תִּירָ֑אוּ אֲנִ֖י יְהֹוָֽה׃

You shall keep my sabbaths, and reverence my sanctuary: I am the Lord.