The Messenger of Allah ﷺ used to say: "Sami Allahu liman hamidah, Rabbana wa lakal-hamd, mil'as-samawati wa mil'al-ardi wa mil'ama shi'ta min shai'in ba'd. Athlath-thana'i wal-majdi khairu ma qalal-'abdu wa kulluna laka 'abdun la mani'a lima a'taita wa la yanfa'u dhal-jaddi minkal-jadd (Allah hears the one who praises Him; Our Lord, to You be the Praise, filling the heavens, filling the Earth, and filling whatever else You will, Lord of Glory and Majesty, the truest thing a slave had said, and we are all slaves to You. None can withhold what You grant, nor can the possession of an owner benefit him before You.)" (Using translation from Nasāʾī 1068)
أَنَّ رَسُولَ اللهِ ﷺ كَانَ يَقُولُ حِينَ يَقُولُ «سَمِعَ اللهُ لِمَنْ حَمِدَهُ رَبِّنَا لَكَ الْحَمْدُ مِلْءَ السَّمَوَاتِ وَمِلْءَ الْأَرْضِ وَمِلْءَ مَا شِئْتَ مِنْ شَيْءٍ بَعْدُ أَهْلَ الثَّنَاءِ وَالْمَجْدِ أَحَقُّ مَا قَالَ الْعَبْدُ كُلُّنَا لَكَ عَبْدٌ لَا نَازَعَ لَمَّا أَعْطَيْتَ وَلَا يَنْفَعُ ذَا الْجَدِّ مِنْكَ الْجَدُّ»