Mu'awiya wrote to Mughira: Write to me anything which you heard from the Messenger of Allah ﷺ. So he (Mughira) wrote to him (Mu'awiya): I heard the Messenger of Allah ﷺ uttering (these words) at the completion of prayer:" There is no god but Allah. He is alone and there is no partner with Him. Sovereignty belongs to Him and to Him is praise due and He is Potent over everything. O Allah! no one can withhold what Thou givest, or give what Thou withholdest, and riches cannot avail a wealthy person with Thee."  

حَدَّثَنَا عَبْدَةُ بْنُ أَبِي لُبَابَةَ وَعَبْدُ الْمَلِكِ بْنُ عُمَيْرٍ سَمِعَا وَرَّادًا كَاتِبَ الْمُغِيرَةِ بْنِ شُعْبَةَ يَقُولُ كَتَبَ مُعَاوِيَةُ إِلَى الْمُغِيرَةِ اكْتُبْ إِلَىَّ بِشَىْءٍ سَمِعْتَهُ مِنْ رَسُولِ اللَّهِ ﷺ قَالَ فَكَتَبَ إِلَيْهِ سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ إِذَا قَضَى الصَّلاَةَ لاَ إِلَهَ إِلاَّ اللَّهُ وَحْدَهُ لاَ شَرِيكَ لَهُ لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَىْءٍ قَدِيرٌ اللَّهُمَّ لاَ مَانِعَ لِمَا أَعْطَيْتَ وَلاَ مُعْطِيَ لِمَا مَنَعْتَ وَلاَ يَنْفَعُ ذَا الْجَدِّ مِنْكَ الْجَدُّ  

[Machine] I heard the Prophet ﷺ saying when he made the salutation: "There is no god but Allah alone, with no partner. His is the sovereignty, and His is the praise. O Allah, there is no withholder of what You give, and no giver of what You withhold. And no wealth or majesty can benefit anyone, for from You is all wealth and majesty." Then Warraad said, "I went to Muawiyah after that and I heard him ordering the people to say this statement and teaching it to them."  

سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ حِينَ يُسَلِّمُ لَا إِلَهَ إِلَّا اللهُ وَحْدَهُ لَا شَرِيكَ لَهُ لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ اللهُمَّ لَا مَانِعَ لِمَا أَعْطَيْتَ وَلَا مُعْطِيَ لِمَا مَنَعْتَ وَلَا يَنْفَعُ ذَا الْجَدِّ مِنْكَ الْجَدُّ قَالَ وَرَّادٌ ثُمَّ وَفَدْتُ بَعْدَ ذَلِكَ عَلَى مُعَاوِيَةَ فَسَمِعْتُهُ عَلَى الْمِنْبَرِ يَأْمُرُ النَّاسَ بِذَلِكَ الْقَوْلِ وَيُعَلِّمُهُمُوهُ  

[Machine] Muawiyah wrote to Al-Mughira: Write to me something you heard from the Messenger of Allah ﷺ that he said after his prayer: The Messenger of Allah ﷺ used to say after his prayer, "There is no deity worthy of worship except Allah alone, without partner. To Him belongs the kingdom and praise, and He has power over all things. O Allah, there is no one who can withhold what You have given, and there is no one who can give what You have withheld. And the importance of the importance comes only from You."  

كَتَبَ مُعَاوِيَةُ إِلَى الْمُغِيرَةِ اكْتُبْ إِلَيَّ بِشَيْءٍ سَمِعْتَهُ مِنْ رَسُولِ اللهِ ﷺ يَقُولُ فِي دُبُرِ الصَّلَاةِ قَالَ كَانَ رَسُولُ اللهِ ﷺ يَقُولُ فِي دُبُرِ صَلَاتِهِ «لَا إِلَهَ إِلَّا اللهُ وَحْدَهُ لَا شَرِيكَ لَهُ لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ اللهُمَّ لَا مَانِعَ لِمَا أَعْطَيْتَ وَلَا مُعْطِيَ لِمَا مَنَعْتَ وَلَا يَنْفَعُ ذَا الْجَدِّ مِنْكَ الْجَدُّ»  

(the freed slave of Al-Mughira bin Shuʿba) Al-Mughira wrote to Muawiya bin Abu Sufyan that Messenger of Allah ﷺ used to say at the end of every prayer after the Taslim, "La ilaha illa-l-lahu wahdahu la sharika lahu; lahu-l-mulk wa lahu-l-hamd, wahuwa 'ala kulli shai'n qadir. Allahumma la mani'a Lima a taita, wa la mu'ta Lima mana'ta, wa la yanfa'u dhal-jaddu minkal-jadd. (Using translation from Bukhārī 6330)   

سَمِعْتَ رَسُولَ اللهِ ﷺ يَقُولُ فِي دُبُرِ الصَّلَاةِ قَالَ سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ فِي دُبُرِ الصَّلَاةِ «لَا إِلَهَ إِلَّا اللهُ وَحْدَهُ لَا شَرِيكَ لَهُ لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ اللهُمَّ لَا مَانِعَ لِمَا أَعْطَيْتَ وَلَا مُعْطِيَ لِمَا مَنَعْتَ وَلَا يَنْفَعُ ذَا الْجَدِّ مِنْكَ الْجَدُّ»