It is reported that the Prophet ﷺ, when he bowed in prayer, would say, "Allah, to You I bow, in You I believe, to You I submit, and upon You I rely. 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."
أخبرنا يحيى بن عثمان الحمصي قال حدثنا أبو حيوة قال حدثنا شعيب عن محمد بن المنكدر
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 لله رب العالمين
[Its chain of transmission is sahih] and it is in Al-Kubra, hadith no. 638, and the hadith has many corroborating narrations. Abu Haywa is Shurayh bin Yazid, and Shuayb is the son of Abu Hamza.