It was narrated from Ibn ‘Abbas that when the Prophet wanted to prostrate after bowing, he would say: “Allahumma, Rabbanawa lakal-hamd, mil’as samawati wa mil’al-ardi wa mil’a ma shi’ta mm shaI’in ba’d. (Allah, our Lord, and to You be the praise, filling the heavens, filling the Earth, and filling whatever else You will).” (Hasan)