The Messenger of Allah ﷺ used to recite this supplication: O Allah! our Lord, unto Thee be praise that would fill the heavens and the earth and fill that which will please Thee besides them.
كَانَ رَسُولُ اللَّهِ ﷺ يَدْعُو بِهَذَا الدُّعَاءِ اللَّهُمَّ رَبَّنَا لَكَ الْحَمْدُ مِلْءَ السَّمَوَاتِ وَمِلْءَ الأَرْضِ وَمِلْءَ مَا شِئْتَ مِنْ شَىْءٍ بَعْدُ