Narrated Aisha:
Allah's Messenger (ﷺ) used to say very often in bowing and prostration (during his prayers), Subhanka Allahumma Rabbana wa bihamdika; Allahumma ighfirli," according to the order of the Qur'an. (ES)
USC-MSA web (English) reference: Vol. 6, Book 60, Hadith 492 (ES)
Arabic reference (ES): Book 65, Hadith 4968 (ES)