قَالَ : وَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : " مَنْ قَامَ رَمَضَانَ إِيمَانًا وَاحْتِسَابًا ، فَإِنَّهُ يُغْفَرُ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ " .
And the Noble Prophet (peace and blessings be upon him) said: Whoever stands (in prayer) during Ramadan with faith and seeking reward, all his past sins are forgiven.