Musnad Abu Ya'la al-Mawsili 150:320

Muhammad ibn 'Abbad narrated to us, Hatim narrated to us, from Salih ibn Muhammad ibn Za'idah, from Abu Salamah, from 'Aishah, who said: The Messenger of Allah (may Allah bless him and grant him peace) would not raise his head toward the sky without saying: "O Turner of hearts, keep my heart firm upon Your obedience."