Aishah reported that the Messenger of Allah ﷺ used to say in his prostration, "Allah, forgive me all my sins, the small and the great, the first and the last, the open and the secret."
أن رسول الله ﷺ كان يقول في سجوده: اللهم اغفر لي ذنبي كله، دقه وجله، وأوله وآخره، وعلانيته وسره.