It wasnarrated that Nadr bin Shaiban said:
"I met Abu Salamah bin'Abdur-Rahman and said: 'Tell me a Hadith that you heard fromyourfather, in which mention is made of the month of Ramadan.' Hesaid:'Yes, my father narrated to me that the Messenger of Allah(ﷺ)mentioned the month of Ramadan and said: "A month which Allahhasenjoined upon you to fast, and in which I have established Qiyam(prayers at night) as Sunnah for you. So whoever fasts it and spendsits nights in prayer out of faith and in hope of reward; he willemerge from his sins as on the day his mother bore him." (AR)
English reference (AR): Vol. 1, Book 5, Hadith 1328 (AR)
Arabic reference (AR): Book 5, Hadith 1389 (AR)