Umm Habiba reported God’s Messenger as saying, “A house will be built in paradise for anyone who prays in a day and a night twelve rak'as, four before and two after the noon prayer, two after the sunset prayer, two after the evening prayer, and two before the dawn prayer.”
Tirmidhi transmitted it. In a version by Muslim she said she heard God’s Messenger say, “If any Muslim prays to God twelve voluntary rak'as daily, over and above the obligatory ones, God will build a house for him in paradise,” or, “a house will be built for him in paradise.”