Ali bin Abu Talib reported,

The Messenger of Allah ﷺ, when he said the opening takbir, would begin with the supplication, "I have turned my face toward the One who originated the heavens and the earth, devoted purely to Him as a Muslim, and I am not among those who associate partners with Allah. Indeed, my prayer, my rites of worship, my living, and my dying are for Allah, Lord of the worlds, who has no partner. With this I have been commanded, and I am among the Muslims."Abu Nadr's version has, "and I am the first of the Muslims.""O Allah, there is no god but You. You are my Lord and I am Your servant. I have wronged myself and I confess my sin, so forgive me all my sins, for none forgives sins but You. Guide me to the best of character, for none can guide to the best of it but You, and turn me away from its evil, for none can turn me away from its evil but You. Blessed and exalted are You. I seek Your forgiveness and turn to You in repentance."When he bowed, he would say, "O Allah, to You I have bowed, in You I have believed, and to You I have submitted. My hearing, my sight, my mind, my bones, and my sinews are humbled before You."When he raised his head from the bowing, he would say, "Allah hears whoever praises Him. Our Lord, and to You belongs all praise, filling the heavens and the earth, and what is between them, and filling whatever else You wish."When he prostrated, he would say, "O Allah, to You I have prostrated, in You I have believed, and to You I have submitted. My face has prostrated to the One who created it, fashioned it, and gave it the finest form, then opened its hearing and sight. Blessed is Allah, the best of creators."When he gave the salam at the end of the prayer, he would say, "O Allah, forgive me what I have done before and what I will do later, what I have concealed and what I have made public, what I have done to excess, and what You know better than I. You are the One who brings forward and the One who delays. There is no god but You."

حدثنا أبو سعيد حدثنا عبد العزيز بن عبد الله الماجشون حدثنا عبد الله بن الفضل والماجشون عن الأعرج عن عبيد الله بن رافع

عن علي بن أبي طالب رضي الله عنه

أن رسول الله ﷺ كان إذا كبر استفتح ثم قال وجهت وجهي للذي فطر السموات والأرض حنيفا مسلما وما أنا من المشركين إن صلاتي ونسكي ومحياي ومماتي لله رب العالمين لا شريك له وبذلك أمرت وأنا من المسلمين قال أبو النضر وأنا أول المسلمين اللهم لا إله إلا أنت أنت ربي وأنا عبدك ظلمت نفسي واعترفت بذنبي فاغفر لي ذنوبي جميعا لا يغفر الذنوب إلا أنت واهدني لأحسن الأخلاق لا يهدي لأحسنها إلا أنت واصرف عني سيئها لا يصرف عني سيئها إلا أنت تباركت وتعاليت أستغفرك وأتوب إليك وكان إذا ركع قال اللهم لك ركعت وبك آمنت ولك أسلمت خشع لك سمعي وبصري ومخي وعظامي وعصبي وإذا رفع رأسه من الركعة قال سمع الله لمن حمده ربنا ولك الحمد ملء السموات والأرض وما بينهما وملء ما شئت من شيء بعد وإذا سجد قال اللهم لك سجدت وبك آمنت ولك أسلمت سجد وجهي للذي خلقه فصوره فأحسن صوره فشق سمعه وبصره فتبارك الله أحسن الخالقين فإذا سلم من الصلاة قال اللهم اغفر لي ما قدمت وما أخرت وما أسررت وما أعلنت وما أسرفت وما أنت أعلم به مني أنت المقدم وأنت المؤخر لا إله إلا أنت