حِصْنُ الْمُسْلِمِ
Hisn al-Muslim 33
Fortress of the Muslim (Hisn al-Muslim)
While bowing in prayer
سُبْـحانَ رَبِّـيَ الْعَظـيم (ثلاث مرات)
Subḥāna Rabbiyal-`Aẓīm. [three times] Glory to my Lord the Exalted (three times in Arabic) Reference: Abu Dawud, Ibn Majah, An-Nasa'i, At-Tirmidhi, and Ahmad. See Al-Albani's Sahih At-Tirmidhi 1/83.
Hisn al-Muslim, 33