مَنْ صَلَّى فِي يَوْمٍ وَلَيْلَةٍ ثِنْتَىْ عَشْرَةَ رَكْعَةً سِوَى الْمَكْتُوبَةِ بَنَى اللَّهُ عَزَّ وَجَلَّ لَهُ بَيْتًا فِي الْجَنَّةِ .
It was narrated that Umm Habibah said: "Whoever prays twelve rak'ahs during the night and day apart from the prescribed prayers, Allah (SWT), the Mighty and Sublime, will build for him a house in Paradise."