مَنْ صَامَ رَمَضَانَ إِيمَانًا وَاحْتِسَابًا غُفِرَ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ
Translation
Whoever fasts Ramadan with faith and seeking reward, his previous sins will be forgiven.
Narrator
Abu Hurairah
Source
Sahih Bukhari & Muslim
Bukhari 1901, Muslim 760

