Chapter: Encouragement to pray qiyam during Ramadan, which is Tarawih
Abu Huraira reported Allah's Apostle ( صلی اللہ علیہ وسلم ) as saying: He who prayed on the Lailat-ul-Qadr (the Majestic Night) knowing that it is (the same night). I (believe) that he (the Prophet also) said: (He who does) it with faith and seeking reward (from Allah), his sins would be forgiven.
Authentic