Musnad Ahmad 26:304

Al-Hasan ibn Yahya, from the people of Merv, narrated to us, Al-Fadl ibn Musa narrated to us, from Sufyan al-Thawri, from Simak, from Ibrahim, from Abd al-Rahman ibn Yazid, from Abdullah, who said: A man came to the Prophet, peace and blessings of Allah be upon him, and said: "O Messenger of Allah, I have done everything with a woman except that I did not have intercourse with her." He said: "Then Allah revealed: 'And establish prayer at the two ends of the day and at the approach of the night. Indeed, good deeds do away with misdeeds' [Hud: 114]."