The Prophet (ﷺ) said, A person who says 100 times a day -
سُبْحَانَ اللَّهِ وَبِحَمْدِهِ
Pronunciation
SubhaanAllahi wa bihamdihi
Meaning
Glorified is Allah and praised is He. The Prophet (ﷺ) said, A person who says 100 times a day (dua mentioned above) It will be forgiven all his sins even if they were as much as the foam of the sea.
Source: Bukhari: 6405
Read the hadith
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ، عَنْ مَالِكٍ، عَنْ سُمَىٍّ، عَنْ أَبِي صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَنْ قَالَ سُبْحَانَ اللَّهِ وَبِحَمْدِهِ. فِي يَوْمٍ مِائَةَ مَرَّةٍ حُطَّتْ خَطَايَاهُ، وَإِنْ كَانَتْ مِثْلَ زَبَدِ الْبَحْرِ " .
Narrated Abu Huraira: Allah's Messenger (ﷺ) said, "Whoever says, 'Subhan Allah wa bihamdihi,' one hundred times a day, will be forgiven all his sins even if they were as much as the foam of the sea. [Bukhari: 6405]
Duas from IslamicAPI's Masnun Dua dataset (based on the Quran, hadith, Hisnul Muslim and Rahe Belayat). See the dataset