Musnad Ahmad 30:3537

Rawh and Abu al-Nadr narrated to us, they said: al-Mas'udi narrated to us, from 'Alqamah ibn Marthad, from Abu al-Rabi', from Abu Hurayrah, that the Messenger of Allah, may Allah bless him and grant him peace, used to say in his supplication: "O Allah, forgive me for what I have sent forth and what I have delayed, what I have kept secret and what I have made public, and my extravagance, and what You know better than I do. You are the Advancer and You are the Delayer. There is no god but You."