It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) used to supplicate as follows: O Allah, forgive my former and latter sins, my hidden and apparent sins, and my transgressions, and also forgive those sins which You know better than I do. You are the One Who brings forward and delays, and there is no deity except You.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 10811
Hadith Gradingحکم دارالسلام:صحیح لغیرہ،وھذا إسناد حسن