The Prophet ﷺ, when he bowed in prayer, would say, "O Allah, to You I have bowed, in You I have believed, to You I have submitted, and upon You I have relied. You are my Lord. My hearing, my sight, my blood, my flesh, my bones, and my sinews are humbled before Allah, Lord of the worlds."
عن النبي ﷺ كان إذا ركع قال: اللهم لك ركعت، وبك آمنت، ولك أسلمت، وعليك توكلت، أنت ربي، خشع سمعي وبصري ودمي ولحمي وعظمي وعصبي الله رب العالمين.
Nasai (1051) narrated it from Yahya bin Uthman Hadrami, who said, Abu Haywa narrated to us, Shuayb narrated to us, from Muhammad bin Munkadir, from Jabir bin Abdullah, and he related the hadith. Its chain is sahih. Abu Haywa is Shurayh bin Yazid Hadrami.Jabir bin Abdullah mentioned both wordings of the hadith, so it appears that he ﷺ would say it one way at times and another way at other times.