Sunan an-Nasa'i, Volume 2, Book 11, Hadith 901 (DarusSalam) ⓘ
It was narrated that Abu Sa'eed said: "When the Messenger of Allah started to pray, he would say: 'Subhanakallahumma, wa bihamdika tabarakasmuka wa ta'ala jadduka wa la ilaha ghairuk (Glory and praise be to You, O Allah. Blessed be Your name and exalted be Your majesty, there is none worthy of worship except You.)"
أَخْبَرَنَا أَحْمَدُ بْنُ سُلَيْمَانَ، قَالَ حَدَّثَنَا زَيْدُ بْنُ الْحُبَابِ، قَالَ حَدَّثَنِي جَعْفَرُ بْنُ سُلَيْمَانَ، عَنْ عَلِيِّ بْنِ عَلِيٍّ، عَنْ أَبِي الْمُتَوَكِّلِ، عَنْ أَبِي سَعِيدٍ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِذَا افْتَتَحَ الصَّلاَةَ قَالَ " سُبْحَانَكَ اللَّهُمَّ وَبِحَمْدِكَ وَتَبَارَكَ اسْمُكَ وَتَعَالَى جَدُّكَ وَلاَ إِلَهَ غَيْرُكَ " .
also referenced under: Hadith 900 (Reference) & Book 11, Hadith 25 (In-Book)