عَنْ أَنَسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «أَقِيمُوا الرُّكُوعَ وَالسُّجُودَ فَوَاللَّهِ إِنِّي لأَرَاكُمْ من بعدِي»

‘A’isha told how the Prophet often said while bowing and prostrating himself, “Glory be to Thee, O God, our Lord, and praise be to Thee. O God, forgive me," thus complying with the [command in] the Qur’an (Al-Qur’an; 110-3).(Bukhari and Muslim.)