It was narrated that Abu Umamah (رضي الله عنه) said: The Prophet (ﷺ) saw me moving my lips and he said to me: “What are you saying, O Abu Umamah?” I said: I am remembering Allah, O Messenger of Allah. He said: “Shall I not tell you of something better or greater than your dhikr of night and day or of day and night? You should say:
سُبْحَانَ اللهِ عَدَدَ مَا خَلَقَ، سُبْحَانَ اللهِ مِلْءَ مَا خَلَقَ، سُبْحَانَ اللهِ عَدَدَ مَا فِي الْأَرْضِ، سُبْحَانَ اللهِ مِلْءَ مَا فِي الْأَرْضِ وَالسَّمَاءِ، سُبْحَانَ اللهِ عَدَدَ مَا أَحْصَى كِتَابُهُ، سُبْحَانَ لِلهِ مِلْءَ مَا أَحْصَى كِتَابُهُ، سُبْحَانَ اللهِ عَدَدَ كُلِّ شَيْءٍ، سُبْحَانَ اللهِ مِلْءَ كُلِّ شَيْءٍ
الْحَمْدُ لِلهِ عَدَدَ مَا خَلَقَ، وَالْحَمْدُ لِلهِ مِلْءَ مَا خَلَقَ، وَالْحَمْدُ لِلهِ عَدَدَ مَا فِي الْأَرْضِ وَالسَّمَاءِ، وَالْحَمْدُ لِلهِ مِلْءَ مَا فِي الْأَرْضِ وَالسَّمَاءِ، وَالْحَمْدُ لِلهِ عَدَدَ مَا أَحْصَى كِتَابُهُ، وَالْحَمْدُ لِلهِ مِلْءَ مَا أَحْصَى كِتَابُهُ، وَالْحَمْدُ لِلهِ عَدَدَ كُلِّ شَيْءٍ، وَالْحَمْدُ لِلهِ مِلْءَ كُلِّ شَيْءٍ
Subhan’Allahi ‘adada ma khalaqa, Subhan’Allahi mil’a ma khalaqa, Subhan’Allahi ‘adada ma fi’l-ardi, Subhan’Allahi mil’a ma fi’l-ardi wa’s-sama’, Subhan’Allahi ‘adada ma ahsa kitaabuhu, Subhan’Allahi mil’a ma ahsa kitabuhu, Subhan’Allahi adada kulli shay’in, Subhan’Allahi mil’a kulli shay’in
Alhamdulillahi ‘adada ma khalaqa, wal-hamdulillahi mil’a ma khalaqa, wal-hamdulillahi ‘adada ma fi’l-ardi wa’s-sama’, wal-hamdulillahi mil’a ma fi’l-ardi wa’s-sama’, wal-hamdulillahi ‘adada ma ahsa kitaabuhu, wal-hamdulillahi mil’a ma ahsa kitabuhu, wal-hamdulillahi adada kulli shay’in, wal-hamdulillahi mil’a kulli shay’in
(Glory be to Allah the number of what He has created, Glory be to Allah filling what He has created, Glory be to Allah the number of what is in earth, Glory be to Allah filling what is in earth and heaven, Glory be to Allah amount of what is enumerated in His Book [Lowhill Mahfooth the Presevered Tablet], Glory be to Allah to what fills his book, Glory be to Allah to the amount of everything, Glory be to Allah to that which fills everything);
(Praise be to Allah to the amount of what He created, and praise be to Allah to the quantity that fills what He created, and praise be to Allah to the amount of what is in the earth and the heavens, and praise be to Allah to the quantity of what fills the earth and the heavens, and praise be to Allah to the amount of what is enumerated in His Book, and praise be to Allah to what fills in His Book, and praise be to Allah to the amount of everything, and praise be to Allah to that which fills everything.’)
[Collected by Ahmad, Ibn Abi Duniya (This wording), Nisa’ee, Ibn Khuzaimah, Ibn Hibban and al-Hakim and he said ‘Authentic upon the conditions of Bukhari & Muslim’ & authenticated by al-Albani in ‘Saheeh Targheeb wa Tarheeb no. 1575]
(Note: There are a few wordings of this hadith and it’s best to follow them all to apply the sunnah at its best. Please check the individual hadith books for the wordings)_Shaykh al-Albani said it is ‘Saheeh lighayrihi’ and collected by at-Tabarani with two chains one of which is Hasan and in his wording it says:
‘Shall I not inform you of something that even if you spent the whole night persevering in it you would not be able to achieve it?’
I said: Of course.
The Messenger (ﷺ) said: Say:
الْحَمْدُ لِلهِ عَدَدَ مَا أَحْصَى كِتَابُهُ، وَالْحَمْدُ لِلهِ عَدَدَ مَا فِي كِتَابِهِ، وَالْحَمْدُ لِلهِ عَدَدَ مَا أَحْصَى خَلْقُهُ، وَالْحَمْدُ لِلهِ عَلَى مَا فِي خَلْقِهِ، وَالْحَمْدُ لِلهِ مِلْءَ سَمَاوَاتِهِ وَأَرْضِهِ، وَالْحَمْدُ لِلهِ عَدَدَ كُلِّ شَيْءٍ، وَالْحَمْدُ لِلهِ مِلْءَ كُلِّ شَيْءٍ. (وَتُسَبِّحُ مِثْلَ ذَلِكَ وَتُكَبِّرُ مِثْلَ ذَلِكَ.)
Ahamdulillahi ‘adada ma ahsa kitaabuhu, wal-hamdulillahi adada ma fi kitabihi, wal-hamdulillahi adada ma ahsa khalquhu, wal-hamdulillahi a’la ma fi khalqihi, wal-hamdulillahi mil’a samawatihi wa ardihi, wal-hamdulillahi adada kulli shay-in, wal-hamdulillahi mil’a kulli shay-in
(Praise be to Allah to the amount of what is enumerated in His Book, praise be to Allah to what fills in His Book, Praise be to Allah to the amount of what He created, praise be to Allah to the quantity that fills what He created, and praise be to Allah to the amount of what is in his heavens and his earth, praise be to Allah to the amount of everything, praise be to Allah to that which fills everything.)
(And glorify Allah (say Subhan’Allah) likewise and say Takbeer (say Allahu’Akbar) likewise.)
In another narration:
‘learn these and teach those who follow you after you.’
[Collected by Nisa’ee in ‘Amal al-Yuam wa Layla’, Ibn Hibban in ‘Saheeh’ & Albaani in ‘Silsilah Saheehah’ No. 2578 and held it to be Hasan. But in other narrations of this Hadeeth al-Albani authenticated it, such as in ‘Saheeh al-Jamia’ no. 2615]
The best way to apply the sunnah is to alternate between the duas or say them both, and Allah knows best.