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.)'" (Using translation from Nasāʾī 1341)  

أَخْبَرَنِي بِشَيْءٍ سَمِعْتُهُ مِنْ رَسُولِ اللهِ ﷺ فَقَالَ كَانَ رَسُولُ اللهِ ﷺ إِذَا قَضَى الصَّلَاةَ قَالَ «لَا إِلَهَ إِلَّا اللهُ وَحْدَهُ لَا شَرِيكَ لَهُ لَهُ الْمَلَكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ اللهُمَّ لَا مَانِعَ لَمَّا أَعْطَيْتُ وَلَا مُعْطِيَ لَمَّا مَنَعْتَ وَلَا يَنْفَعُ ذَا الْجَدِّ مِنْكَ الْجَدُّ»  

When the Messenger of Allah ﷺ finished the prayer and pronounced salutation he uttered (this supplication):" There is no god but Allah. He is alone, Who has no partner. To Him belongs the sovereignty and to Him praise is due and He is Potent over every. thing. O Allah! no one can withhold what Thou givest, or give what Thou withholdest, and the riches cannot avail a wealthy person with Thee." (Using translation from Muslim 593a)  

أَنَّ رَسُولَ اللهِ ﷺ كَانَ يَقُولُ دُبُرَ الصَّلَاةِ إِذَا سَلَّمَ «لَا إِلَهَ إِلَّا اللهُ وَحْدَهُ لَا شَرِيكَ لَهُ لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ اللهُمَّ لَا مَانِعَ لَمَّا أَعْطَيْتَ وَلَا مُعْطِيَ لَمَّا مَنَعْتَ وَلَا يَنْفَعُ ذَا الْجَدِّ مِنْكَ الْجَدُّ»