וְאִם־שְׁלָ֨שׁ־אֵ֔לֶּה לֹ֥א יַעֲשֶׂ֖ה לָ֑הּ וְיָצְאָ֥ה חִנָּ֖ם אֵ֥ין כָּֽסֶף׃ (ס)
И если он не сделает ей этих трех, то она выйдет ни за что, без денег.
Midrash Tanchuma Buber
Another interpretation (of the oral text to Ps. 139:16): AND ONE OF THEM WAS [HIS OWN]. This refers to the Sabbath day, as stated (in Exod. 21:11): WHEREFORE THE LORD HAS BLESSED THE SABBATH DAY AND HALLOWED IT.