When the Prophet ﷺ bowed, he said: "Allahumma laka rak'atu wa bika amantu wa laka aslamtu wa alayka tawwakaltu, anta Rabbi, khasha'a sam'i wa basri wa dammi wa lahmi wa 'azmi wa 'asabi Lillahi Rabbil-'Alamin ( O Allah, to You I have bowed, in You I believe, to You I have submitted and in You I put my trust. You are my Lord. My hearing, my sight, my blood, my flesh, my bones and sinews are humbled before Allah, the Lord of the Worlds.)"
عَنِ النَّبِيِّ ﷺ كَانَ إِذَا رَكَعَ قَالَ اللَّهُمَّ لَكَ رَكَعْتُ وَبِكَ آمَنْتُ وَلَكَ أَسْلَمْتُ وَعَلَيْكَ تَوَكَّلْتُ أَنْتَ رَبِّي خَشَعَ سَمْعِي وَبَصَرِي وَدَمِي وَلَحْمِي وَعَظْمِي وَعَصَبِي لِلَّهِ رَبِّ الْعَالَمِينَ