Shabbat Themes-Teshuvah

On the eve of the Shabbat one must do penance for all that transpired in the course of the week, in order to welcome the Shabbat without any impediment of sin or wrongdoing. At the end of the holy Shabbat, one must do penance for what was covered up by the illumination of Shabbat, that it may beep your, that troublesome matters that are rendered impotent by the holiness of Shabbat shall not disturb the proprieties of the weekdays, when such defense is not available. (Orot haTeshuvah, Chapter 14, #33)