ON THE SUBJECT OF 213 VOLUNTARY PRAYERS DURING RAMADAN ; FORGIVENESS OF SINS IN RAMADAN H 1210 "Whosoever offers the voluntary prayer during Ramadan in belief and charging Allah for its recompense will have his past sins forgiven." R 1210 Bukhari and Muslim with a chain up to Abu Hurairah who related that the Messenger of Allah, praise and peace be upon him, said this.
باب استحباب قيام رمضان وَهُوَ التراويح 1187- عن أَبي هريرة رضي الله عنه أنَّ رسول الله صلى الله عليه وآله وسلم ، قَالَ : "مَنْ قَامَ رَمَضَانَ إيماناً وَاحْتِسَاباً غُفِرَ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ" متفقٌ عَلَيْهِ .