Messenger of Allah ﷺ said, "Whoever establishes the prayers on the night of Qadr out of sincere faith and hoping to attain Allah's rewards (not to show off) then all his past sins will be forgiven."  

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ يَقُمْ لَيْلَةَ الْقَدْرِ إِيمَانًا وَاحْتِسَابًا غُفِرَ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ  

“Whoever spends the nights of the two ‘Eid in praying voluntary prayers, seeking reward from Allah, his heart will not die on the Day when hearts will die.”  

عَنِ النَّبِيِّ ﷺ قَالَ مَنْ قَامَ لَيْلَتَىِ الْعِيدَيْنِ لِلَّهِ مُحْتَسِبًا لَمْ يَمُتْ قَلْبُهُ يَوْمَ تَمُوتُ الْقُلُوبُ  

Messenger of Allah ﷺ said, "Whoever establishes the prayers on the night of Qadr out of sincere faith and hoping to attain Allah's rewards (not to show off) then all his past sins will be forgiven." (Using translation from Bukhārī 35)  

قَالَ رَسُولُ اللهِ ﷺ «مَنْ يَقُمْ لَيْلَةَ الْقَدْرِ إِيمَانًا وَاحْتِسَابًا يَغْفِرُ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ»  

"مَنْ صَلَّى لَيلَةَ الْفِطرِ وَالأَضْحَى لَمْ يَمُتْ قَلْبُهُ يَوْمَ تَمُوتُ الْقُلُوبُ".  

"Whosoever livens up (staying awake in the night prayer and supplication) the two nights of ʿĪd, and the night of the middle of ˹the month of˺ Shaʿbān, his heart will not die when the hearts die (i.e. out of the fear of the Day of Judgement)."  

«مَنْ أَحْيَا لَيلَتِى الْعِيدِ، ولَيلَة النِّصْفِ مِنْ شَعْبَانَ لَمْ يمُتْ قَلبُهُ يَوْمَ تَمُوتُ الْقُلُوبُ۔»