When the Prophet (ﷺ) wanted to prostrate after bowing, he would say: "Allahumma, Rabbana wa lakal-hamd, mil'as-samawati wa mil'al-ardi wa mil'ama shi'ta min shai'in ba'd ( O Allah, our Lord, to You be the Praise, filling the heavens, filling the Earth, and filling whatever else You will.)"
Reference: Sunan an-Nasa'i 1067 In-book : Book 12, Hadith 39 English translation : Vol. 2, Book 12, Hadith 1068
Help us gift a modern, ad-free Islamic application for the Muslim Ummah. Your donation will be recorded as Sadaqah Jariyah in your book of deeds, In Sha Allah.