Al-Mughirah b. Shu'bah reported:"Mu'awiyah wrote to al-Mughirah b. Shu'bah: 'What would the the Messenger of Allah (ﷺ) recite when he gave Taslim (salutation) in the prayer ?' Al-Mughirah dictated and wrote to Mu'awiyah: 'The Messenger of Allah (ﷺ) used to say (at the end of the prayer after taslim): 'There is no God but Allah, Alone, Who has no partner, to Him belongs the dominion, to Him praise is due, and He is Omnipotent. O Allah no one cane withhold what You give and give what You withhold, and none benefits the fortunate person, for from You is the fortune

English translation · Sunan Abu Dawud