When the Prophet ﷺ intended to prostrate after the bowing, he would say, "Allah, our Lord, to You belongs all praise, filling the heavens, filling the earth, and filling whatever else You will beyond them."
حدثنا ابن أبي بكير هو يحيى حدثنا إبراهيم يعني ابن نافع عن وهب بن ميناس العدني عن سعيد بن جبير
أن النبي ﷺ كان إذا أراد السجود بعد الركعة يقول اللهم ربنا لك الحمد ملء السموات وملء الأرض وملء ما شئت من شيء بعد
Its isnad is sahih. Wahb bin Manus, also said to be Manus, Adani, is trustworthy. Ibn Hibban mentioned him in Ath-Thiqat, and Bukhari gave his biography in Al-Kabir 4/2/168-169 without mentioning any fault in him, and he affirmed that he heard from Saeed bin Jubayr. This hadith is narrated from him through Yahya bin Abu Bukayr. The hadith is a repetition of 2498, and will come again at 3083.