It is narrated from Abu Hurairah (may Allah be pleased with him) that he said: When the Messenger of Allah (ﷺ) would bow in rukū‘, he would recite: "O Allah! I have bowed for You, and I have submitted to You, and I have believed in You, and You alone are my Lord. My ears, my eyes, my bones, my hair, my skin, and (this body) which my feet have lifted, have all humbled themselves before Allah, the Lord of all the worlds."
Hadith Referenceمسند الإمام الشافعي / كتاب الصلاة / 226
Hadith Takhrijاسنادہ ضعیف لشدة ضعف شیخ الشافعی، لیکن الحديث صحيح من حديث علی كما سيأتی أخرجہ البیہقی فی المعرفة السنن والآثار (801)