Among its benefits to him in religious life is tranquility of the soul in reliance on GD; may He be exalted as the servant is bound to rely on his master. For if a person does not put his trust in GD, he places his trust in what is other than GD, and whoever trusts in what is other than GD GD removes His providence from him and leaves him in the hands of whatever he trusts in. pg 349
Daily Halacha
Just as it is forbidden to wash dishes that are not needed for Shabbos, so is it forbidden to rinse them in preparation for washing them after Shabbos. Soaking dishes in preparation for washing them after Shabbos is also prohibited. Soaking is only prohibited when it entails a specific additional act, such as filling a dirty pot with water to soak it or filling a dishpan with water on Shabbos and then placing the dirty dishes in it. If, however, a dishpan was filled before Shabbos and the dishes were merely removed from the table and deposited therein, that is permitted. Soaking is allowed, for instance, to rinse or soak dirty dishes that will otherwise become permanently stained and will attract insects or flies or emit a foul odor. Some poskim permit soaking dishes or pots to prevent leftover grease or soft food particles from hardening and becoming difficult to wash after Shabbos. Other poskim do not agree with this leniency. All poskim agree that once the residue has hardened and formed a crust, it is forbidden to rinse or soak dishes or post to prepare them for washing after Shabbos