from the Messenger of Allah ﷺ who said: Whoever says:

al-ḥamdu lillāhi ʿadada mā khalaqa, wal-ḥamdu lillāhi milʾa mā khalaqa, wal-ḥamdu lillāhi ʿadada mā fī al-samāwāti wal-arḍ, wal-ḥamdu lillāhi milʾa mā fī al-samāwāti wal-arḍ, wal-ḥamdu lillāhi ʿadada mā aḥṣā kitābuhu, wal-ḥamdu lillāhi milʾa mā aḥṣā kitābuhu, wal-ḥamdu lillāhi ʿadada kulli shayʾ, wal-ḥamdu lillāhi milʾa kulli shayʾ

(All praise is due to Allah as much as the number of what ˹creations˺ He created, and all praise is due to Allah as much as what fills what He created. All praise is due to Allah as much as the number of what are in the heavens and the earth, and all praise is due to Allah as much as what fills the heavens and the earth. All praise is due to Allah as much as the number of what His Book has enumerated, and all praise is due to Allah as much as what fills that His Book has enumerated. All praise is due to Allah as much as the number of everything, and all praise is due to Allah as much as what fills everything.)
... and do the same ˹saying˺ subḥān Allah (glory be to Allah) then, that is the greatest.

عَنْ رَسُولِ اللهِ ﷺ أَنَّهُ قَالَ مَنْ قَالَ:
(الْحَمْدُ لِلَّهِ عَدَدَ مَا خَلَقَ، وَالْحَمْدُ لِلَّهِ مِلْءَ مَا خَلَقَ، وَالْحَمْدُ لِلَّهِ عَدَدَ مَا فِي السَّمَاوَاتِ وَالْأَرْضِ، وَالْحَمْدُ لِلَّهِ مِلْءَ مَا فِي السَّمَاوَاتِ وَالْأَرْضِ، وَالْحَمْدُ لِلَّهِ عَدَدَ مَا أَحْصَى كِتَابُهُ، وَالْحَمْدُ لِلَّهِ مِلْءَ مَا أَحْصَى كِتَابُهُ، وَالْحَمْدُ لِلَّهِ عَدَدَ كُلِّ شَيْءٍ، وَالْحَمْدُ لِلَّهِ مِلْءَ كُلِّ شَيْءٍ)
وَسُبْحَانَ اللهِ مِثْلَهَا فَأَعْظِمْ ذَلِكَ

[Machine] The Messenger of Allah ﷺ passed by him while he was moving his lips, so he said, "What are you saying, O Abu Umamah?"
He said, "I remember my Lord."
He said, "Shall I not inform you of something greater and better than your remembrance of Him day and night? That is to say, 'Glorified is Allah in number as much as He has created, and glorified is Allah in fullness as much as He has created, and glorified is Allah in number as much as is in the earth and the heaven, and glorified is Allah in fullness as much as is in the earth and the heaven, and glorified is Allah in number as much as His Book has counted, and glorified is Allah in number as much as everything, and glorified is Allah in fullness as much as everything, and you say, 'Praise be to Allah' like that.'"

أَنَّ رَسُولَ اللَّهِ ﷺ مَرَّ بِهِ وَهُوَ يُحَرِّكُ شَفَتَيْهِ فَقَالَ «مَاذَا تَقُولُ يَا أَبَا أُمَامَةَ؟ » قَالَ أَذْكُرُ رَبِّي قَالَ «أَلَا أُخْبِرُكَ بِأَكْثَرَ أَوْ أَفْضَلَ مِنْ ذِكْرِكَ اللَّيْلَ مَعَ النَّهَارِ وَالنَّهَارَ مَعَ اللَّيْلِ؟ أَنْ تَقُولَ سُبْحَانَ اللَّهِ عَدَدَ مَا خَلَقَ وَسُبْحَانَ اللَّهِ مِلْءَ مَا خَلَقَ وَسُبْحَانَ اللَّهِ عَدَدَ مَا فِي الْأَرْضِ وَالسَّمَاءِ وَسُبْحَانَ اللَّهِ مِلْءَ مَا فِي الْأَرْضِ وَالسَّمَاءِ وَسُبْحَانَ اللَّهِ عَدَدَ مَا أَحْصَى كِتَابُهُ وَسُبْحَانَ اللَّهِ عَدَدَ كُلِّ شَيْءٍ وَسُبْحَانَ اللَّهِ مِلْءَ كُلِّ شَيْءٍ وَتَقُولُ الْحَمْدُ لِلَّهِ مِثْلَ ذَلِكَ»

[Machine] The Prophet ﷺ saw me while I was moving my lips, so he said, "What are you saying, O Abu Umamah?" I said, "I am remembering Allah." He said, "Shall I not tell you of something that is more abundant in remembrance of Allah than you? You say: 'Alhamdulillah' (Praise be to Allah) equal to the number of His creations, and 'Alhamdulillah' (Praise be to Allah) filling what He has created, and 'Alhamdulillah' (Praise be to Allah) equal to what is in the heavens and what is on the earth, and 'Alhamdulillah' (Praise be to Allah) equal to what His Book has enumerated, and 'Alhamdulillah' (Praise be to Allah) filling what His Book has enumerated, and 'Alhamdulillah' (Praise be to Allah) equal to everything, and 'Alhamdulillah' (Praise be to Allah) filling everything." Then he said, "Teach them to those who come after you."

رَآنِي النَّبِيُّ ﷺ وَأَنَا أُحَرِّكُ شَفَتَيَّ فَقَالَ «مَا تَقُولُ يَا أَبَا أُمَامَةَ؟» قُلْتُ أَذْكُرُ اللهَ قَالَ أَفَلَا أَدُلُّكَ عَلَى مَا هُوَ أَكْثَرُ مِنْ ذِكْرِكَ اللهَ اللَّيْلَ مَعَ النَّهَارِ؟ تَقُولُ الْحَمْدُ لِلَّهِ عَدَدَ مَا خَلَقَ وَالْحَمْدُ لِلَّهِ مِلْءَ مَا خَلَقَ وَالْحَمْدُ لِلَّهِ عَدَدَ مَا فِي السَّمَاوَاتِ وَمَا فِي الْأَرْضِ وَالْحَمْدُ لِلَّهِ عَدَدَ مَا أَحْصَى كِتَابُهُ وَالْحَمْدُ لِلَّهِ مِلْءَ مَا أَحْصَى كِتَابُهُ وَالْحَمْدُ لِلَّهِ عَدَدَ كُلِّ شَيْءٍ وَالْحَمْدُ لِلَّهِ مِلْءَ كُلِّ شَيْءٍ وَتُسَبِّحُ اللهَ مِثْلَهُنَّ ثُمَّ قَالَ «تُعَلِّمُهُنَّ عَقِبَكَ مِنْ بَعْدَكَ»

"ألا أخْبُركَ بأَكْثَرَ وأَفْضَل من ذكْركَ اللَّيلَ مَعَ النَّهَارِ والنهار مَعَ اللَّيْلِ؟ أن تقولَ سُبْحَان اللَّه عدد مَا خلق، وسبحان اللَّه مِلءَ ما خلق، وسبحان اللَّه عَدَدَ ما في الأَرْضِ والسَّمَاءِ، وسبحان اللَّه مِلءَ ما في الأرض والسَّمَاءِ، وسبحان اللَّه عَدَدَ مَا أَحْصَى كتابه، وسبحان اللَّه عَدَدَ كُلِّ شىْءٍ، وسُبْحانَ اللَّه مِلْءَ كُلِّ شئٍ، وتقول: الْحمد للَّه مِثْلَ ذلكَ" .

"عن أبى أمامة قال: رآنى النبى ﷺ وأنا أحرك شفتى فقال: لِمَ تحرك شفتيك؟ فقلت: اذكر الله، قال: أفلا أدلك على شئ هو أكبر من ذكرك الليل مع النهار، والنهار مع الليل؟ قلت: بلى يا نبى الله، قال: قل الحمد لله عدد ما خلق، والحمد لله مثل ما خلق، والحمد لله عدد ما في السموات والأرض، والحمد لله عدد ما أحصى كتابه، والحمد لله عدد كل شئ، وسبحان الله عدد ما خلق، وسبحان الله ملء ما خلق، وسبحان الله ملء ما في السموات والأرض، وسبحان الله عدد ما أحصى كتابه، وسبحان الله عدد كل شئ، وسبحان الله ملء كل شئ - قال أبو أمامة: إن رسول الله ﷺ أمرنى أن أعلمهن عقبى من بعدى".