While bowing in prayer (ruku)
اللّهُـمَّ لَكَ رَكَـعْتُ وَبِكَ آمَـنْت ، ولَكَ أَسْلَـمْت ، خَشَـعَ لَكَ سَمْـعي ، وَبَصَـري ، وَمُخِّـي ، وَعَظْمـي ، وَعَصَـبي ، وَما استَقَـلَّ بِهِ قَدَمي
O Allah, unto You I have bowed, and in You I have believed, and to You I have submitted. My hearing, sight, mind, bones, tendons and what my feet carry are humbled before You.