Three Sages and the Psalm of the Departing Soul in Miketz

[(Genesis 43:14:) AND MAY EL SHADDAI GRANT YOU MERCY.] This is what Scripture says (Psalms 32:6): THEREFORE LET EVERY PIOUS ONE PRAY TO YOU AT THE TIME OF FINDING, etc. Zavdi ben Levi, and Rabbi Yose ben Petros, and Rabbi Yehoshua ben Levi: one recited (Psalms 31:20): HOW ABUNDANT IS YOUR GOODNESS, WHICH YOU HAVE STORED UP FOR THOSE WHO FEAR YOU; and one recited (Psalms 5:12): AND LET ALL WHO TAKE REFUGE IN YOU REJOICE, LET THEM EVER SING FOR JOY, AND YOU WILL SHELTER OVER THEM; and one recited (Psalms 32:6): THEREFORE LET EVERY PIOUS ONE PRAY TO YOU AT THE TIME OF FINDING. What is the meaning of AT THE TIME OF FINDING (le-et metzo)? At the time of the wringing-out (mitzui) of the day.