The Book of Qiyam Al-Lail (The Night Prayer) and Voluntary Prayers During the Day
20/66. Chapter:
The reward of one who prays twelve rak'ahs apart from the prescribed prayers during the day and night
Sunan an-Nasai
أَخْبَرَنَا مُحَمَّدُ بْنُ حَاتِمِ بْنِ نُعَيْمٍ، قَالَ حَدَّثَنَا حَبَّانُ، وَمُحَمَّدُ بْنُ مَكِّيٍّ، قَالاَ أَنْبَأَنَا عَبْدُ اللَّهِ، عَنْ أَبِي يُونُسَ الْقُشَيْرِيِّ، عَنِ ابْنِ أَبِي رَبَاحٍ، عَنْ شَهْرِ بْنِ حَوْشَبٍ، حَدَّثَهُ عَنْ أُمِّ حَبِيبَةَ بِنْتِ أَبِي سُفْيَانَ، قَالَتْ مَنْ صَلَّى ثِنْتَىْ عَشْرَةَ رَكْعَةً فِي يَوْمٍ فَصَلَّى قَبْلَ الظُّهْرِ بَنَى اللَّهُ لَهُ بَيْتًا فِي الْجَنَّةِ .
It was narrated that Umm Habibah bint Abi Sufyan said: "Whoever prays twelve rak'ahs in a day and prays before Zuhr, Allah (SWT) will build for him a house in Paradise."
Reference : Sunan an-Nasa'i 1800In-book reference : Book 20, Hadith 203English translation : Vol. 2, Book 20, Hadith 1801