It is narrated from Sayyidah Aisha (may Allah be pleased with her) that she said: The Messenger of Allah (peace and blessings be upon him) offered the Duha prayer, then said: «اللهم اغفر لي، وتب علي، إنك أنت التواب الرحيم» "O Allah! Forgive me, accept my repentance, indeed You are the Acceptor of repentance and the Most Merciful." He continued to say this supplication one hundred times.