It was narrated from Abu Hurairah that: The Messenger of Allah (ﷺ) said: "Whoever prays Qiyam during Ramadan out of faith and in the hope of reward, he will be forgiven his previous sins"
SahihSahihBook 20 · Hadith 6
سنن النسائي
It was narrated from Abu Hurairah that: The Messenger of Allah (ﷺ) said: "Whoever prays Qiyam during Ramadan out of faith and in the hope of reward, he will be forgiven his previous sins"