The Book of Fasting
22/39. Chapter:
The Reward of one who prays Qiyam in Ramadan and fasts the month out of faith and hope for reward
Sunan an-Nasai
أَخْبَرَنِي مُحَمَّدُ بْنُ خَالِدٍ، قَالَ حَدَّثَنَا بِشْرُ بْنُ شُعَيْبٍ، عَنْ أَبِيهِ، عَنِ الزُّهْرِيِّ، قَالَ أَخْبَرَنِي عُرْوَةُ بْنُ الزُّبَيْرِ، أَنَّ عَائِشَةَ، أَخْبَرَتْهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم خَرَجَ مِنْ جَوْفِ اللَّيْلِ فَصَلَّى فِي الْمَسْجِدِ وَسَاقَ الْحَدِيثَ وَقَالَ فِيهِ وَكَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُرَغِّبُهُمْ فِي قِيَامِ رَمَضَانَ مِنْ غَيْرِ أَنْ يَأْمُرَهُمْ بِعَزِيمَةِ أَمْرٍ فِيهِ فَيَقُولُ " مَنْ قَامَ رَمَضَانَ إِيمَانًا وَاحْتِسَابًا غُفِرَ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ " .
'Urwah bin Az-Zubair narrated that 'Aishah told him: "The Messenger of Allah went out in the middle of the night and prayed in the Masjid," and he quoted the same Hadith, in which he said: "nd he encouraged them to pray Qiyam in Ramadan, without insisting on that, and he said: 'Whoever spends the nights of Ramadan in prayer (Qiyam) out of faith and in the hope of reward, he will be forgiven his previous sins." '
Reference : Sunan an-Nasa'i 2195In-book reference : Book 22, Hadith 106English translation : Vol. 3, Book 22, Hadith 2197