Reference: Muslim 1/418
Whoever says this after every prayer will be forgiven his sins even though they be as the foam of the sea.
سُبْحَانَ اللهِ Perfect is Allah– 33 times
الْحَمْدُ للهِ All praise and thanks are only for Allah — 33 times
اللهُ أَكْبَرُ Allah is greater — 33 times
لَا إِلَهَ إِلَّا اللهُ وَحْدَهُ لَا شَرِيكَ لَهُ، لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ”. – Once
None has the right to be worshipped but Allah alone, He has no partner, His is the dominion and His is the praise and He is Able to do all things.