[Machine] The Messenger of Allah ﷺ said: "Whoever says behind every prayer thirty-three times of takbeer, thirty-three times of tasbeeh, and thirty-three times of tahmeed, and says 'there is no god but Allah alone, without partner, to Him belongs the dominion and to Him belongs all praise, and He is able to do all things,' his sins will be forgiven even if they are as much as the foam of the sea." Narrated by At-Tirmidhi from Abu Salih from Abu Hurairah with a different wording.
قَالَ رَسُولُ اللهِ ﷺ مَنْ قَالَ خَلْفَ كُلِّ صَلَاةٍ ثَلَاثًا وَثَلَاثِينَ تَكْبِيرَةً وَثَلَاثًا وَثَلَاثِينَ تَسْبِيحَةً وَثَلَاثًا وَثَلَاثِينَ تَحْمِيدَةً وَيَقُولُ لَا إِلَهَ إِلَّا اللهُ وَحْدَهُ لَا شَرِيكَ لَهُ لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ غُفِرَتْ لَهُ خَطَايَاهُ وَإنْ كَانَتْ مِثْلَ زَبَدِ الْبَحْرِ رَوَاهُ سُمَيٌّ عَنْ أَبِي صَالِحٍ عَنْ أَبِي هُرَيْرَةَ بِلَفْظٍ آخَرَ