[Machine] Your Prophet ﷺ used to say when he was in the position of ruku' or sujood, "Subhanaka wa bihamdik, astaghfiruka wa atubu ilaik" which means "Glory be to You, O Allah, and I praise You. I seek Your forgiveness and I repent to You."
كَانَ نَبِيُّكُمْ ﷺ إِذَا كَانَ رَاكِعًا أَوْ سَاجِدًا قَالَ «سُبْحَانَكَ وَبِحَمْدِكَ أَسْتَغْفِرُكَ وَأَتُوبُ إِلَيْكَ»