It is narrated from Hazrat Umm Salamah (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) used to frequently make this supplication: "O Allah, Turner of the hearts, keep my heart firm upon Your religion." I asked, "O Messenger of Allah, are hearts also turned?" The Prophet (peace and blessings be upon him) replied, "Yes, Allah has created the heart of every human being between two of His fingers. If He wills, He keeps it straight, and if He wills, He turns it aside. That is why we supplicate to Allah: 'Our Lord, do not let our hearts deviate after You have guided us,' and we ask Him for mercy from Himself. Surely, He is the Bestower." I asked, "O Messenger of Allah, will you not teach me a supplication that I may recite for myself?" The Prophet (peace and blessings be upon him) said, "Why not? You should say: 'O Allah, O Lord of the Prophet Muhammad (peace and blessings be upon him), forgive my sins, remove the anger from my heart, and protect me from every misleading trial as long as You grant me life.'"