Muawiyah wrote to Al-Mughirah bin Shu'bah saying: "Tell me of something that you heard from the Messenger of Allah ﷺ." He said: "When the Messenger of Allah ﷺ finished praying, he would say: La Ilaha Illallah wahdahu la sharika lah, lahul-mulk wa lahul-hamd wa huwa 'ala kulli shay'in qadir. Allahumma la mani' lima a'taita wa la mu'tia lima mana'ta wa la yanfa'u dhal-jaddi minka al-jadd. (There is none worthy of worship except Allah ﷺ alone with no partner or associate. He is the Dominion and to Him be all praise, and He is able to do all things. O Allah, one can withhold what You have given and none can give what You have withheld, and no wealth or fortune can benefit anyone for from You comes all wealth and fortune.)'"  

أَخْبِرْنِي بِشَىْءٍ سَمِعْتَهُ مِنْ رَسُولِ اللَّهِ ﷺ فَقَالَ كَانَ رَسُولُ اللَّهِ ﷺ إِذَا قَضَى الصَّلاَةَ قَالَ 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  

"Al-Mughirah bin Shu'bah wrote to Mu'awiyah (Saying) that the Messenger of Allah ﷺ used to say following every prayer, after the taslim: 'La Ilaha Illallah wahdahu la sharika lah, lahul-mulk wa lahul-hamd wa huwa 'ala kulli shay'in qadir. Allahumma la mani' lima a'taita wa la mu'tia lima mana'ta wa la yanfa'u dhal-jaddi minka al-jadd. (There is none worthy of worship except Allah ﷺ alone with no partner or associate. He is the Dominion and to Him be all praise, and He is able to do all things. O Allah, one can withhold what You have given and none can give what You have withheld, and no wealth or fortune can benefit anyone for from You comes all wealth and fortune.)'  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَقُولُ دُبُرَ الصَّلاَةِ إِذَا سَلَّمَ 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