(25) باب قِيَامُ لَيْلَةِ الْقَدْرِ مِنَ الإِيمَانِ
Narrated Abu Huraira:
Allah's Messenger (ﷺ) said, "Whoever establishes the prayers on the night ofQadr out of sincere faith and hoping to attain Allah's rewards (not toshow off) then all his past sins will be forgiven."
Reference: Sahih al-Bukhari 35
In-book reference: Book 2, Hadith 28
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 2, Hadith 35