Enliven The Night of Ramadan As An Expiation of Sin

عَنْ أَبِي هُرَيْرَةَ قَالَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ مَنْ قَامَ رَمَضَانَ إِيمَانًا وَاحْتِسَابًا غُفِرَ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ 

Abu Huraira reported Allah's Messenger (ﷺ) as saying:

He who observed prayer at night during Ramadan, because of faith and seeking his reward from Allah, his previous sins would be forgiven.

(HR Bukhari No: 759a) 

Status: Hadis Sahih

https://sunnah.com/muslim:759a 

Learnings:

1. Enliven Ramadan on the basis of faith means enlivening the night with tarawih prayers, witr prayers, tahajud prayers, reciting the Quran, iktikaf, praying, zikr and other righteous deeds because of believing in sunnah practices. 

2. Ihtisab means hoping for reward only from Allah SWT. One do not feel burdened to perform worship. It is not done on the basis of riya', looking for praise or simply following the habits of the people around. 

3. May the qiyam at night, whether for voluntary prayer, recitation, zikr, du'a, iktikaf or even waking up for sahur, will be part of the element of erasing past sins 

4. Among the worship at night in the month of Ramadan is the Tarawih prayer. A person who prays with the imam until he finishes praying, it is written for him as if he has prayed all night. The Prophet SAW said: 

عَنْ أَبِي ذَرٍّ قَالَ ..... فَقَالَ إِنَّهُ مَنْ قَامَ مَعَ الْإِمَامِ حَتَّى يَنْصَرِفَ كُتِبَ لَهُ قِيَامُ لَيْلَةٍ ... 

From Abu Zar RA said, the Messenger of Allah SAW said: 'Whoever stands with the imam (nightly voluntary prayer), until it is finished (until the imam departs), it is written for him the reward of the person who prays all night.'

(HR Tirmizi No: 806) 

Status: Sahih

https://sunnah.com/tirmidhi:806