"I prayed with the Messenger of Allah ﷺ, and he bowed and said when bowing: 'Subhana Rabbial-azim (Glory be to my Lord Almighty).' And when prostrating: 'Subhana Rabbial-'Ala (Glory be to my Lord Most High).'" (Using translation from Nasāʾī 1046)
صَلَّيْتُ مَعَ رَسُولِ اللهِ ﷺ فَرَكَعَ فَقَالَ فِي رُكُوعِهِ «سُبْحَانَ رَبِّيَ الْعَظِيمِ» وَفِي سُجُودِهِ «سُبْحَانَ رَبِّيَ الْأَعْلَى»