I said: 'O Amir al-Mu'minin, I saw you raise your head and smile.' Imam (as) replied: 'Yes, O Asbagh. I held the stirrup for the Messenger of Allah (swt) (peace and blessings of Allah (swt) be upon him and his family) just as you held it for me. He raised his head to the sky and smiled. I asked him just as you asked me, and I will tell you as he told me. I held the stirrup of the Messenger of Allah (swt) (peace and blessings of Allah (swt) be upon him and his family) as he was about to mount al-Shahba (his mount). He raised his head toward the sky and smiled. I said, "O Messenger of Allah (swt), you raised your head toward the sky and smiled." Prophet (sw) replied: "O Ali, whenever anyone mounts something Allah (swt) has blessed them with and then recites Ayat al-Sukhrah (the verse of subjugation: Surah Az-Zukhruf 43:13-14) and says; 'Astaghfirullah al-ladhi la ilaha illa Huwa al-Hayy al-Qayyum, wa atubu ilayh. Allahumma ighfir li dhunubi fa innahu la yaghfiru al-dhunuba illa Ant.' ‘O Allah (swt), I seek forgiveness from You, the One besides whom there is no deity, the Living, the Sustainer, and I repent to You. O Allah (swt), forgive my sins, for no one forgives sins except You’ Except that the Noble and Generous Lord (azj) says: 'O My angels, My servant knows that none forgives sins but Me. Bear witness that I have forgiven their sins.'""