Hisnul Muslim · Dua 36 of 267
Invocations during Ruki' (bowing in prayer)
((اللَّهُمَّ لَكَ رَكَعْتُ، وَبِكَ آمَنْتُ، وَلَكَ أَسْلَمْتُ، خَشَعَ لَكَ سَمْعِي، وَبَصَرِي، وَمُخِّي، وَعَــــظْمِي، وَعَصَبِي، [وَمَا استَقَلَّتْ بِهِ قَدَمِي])).
How to read it
Allahumma laka rakaAAt, wabika amant, walaka aslamt, khashaAAa laka samAAee, wabasaree, wamukhkhee, waAAathmee, waAAasabee, wamas-taqalla bihi qadamee.
English meaning
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.