Hadith 5:48
Abu Hurairah narrated that The Messenger of Allah (ﷺ) said:
“Whoever prays during the night in Ramadan out of sincere faith and seeking its reward from Allah, will have all of his previous sins forgiven." Agreed upon.
عَنْ أَبِي هُرَيْرَةَ - رضى الله عنه - أَنَّ رَسُولَ اَللَّهِ - صلى الله عليه وسلم -قَالَ: { مَنْ قَامَ رَمَضَانَ إِيمَانًا وَاحْتِسَابًا, غُفِرَ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ } مُتَّفَقٌ عَلَيْهِ