question #3 Sahih Muslim 728a, Book 6, Hadith 124 : What is the reward promised for those who maintain regular voluntary prayers according to Islamic teachings?

A house will be built in Paradise, for anyone who prays in a day and a night twelve rak’ahs; and she added: I have never abandoned (observing them) since I heard it from the Messenger of Allah (ﷺ). Some of the other narrators said the same words: I have never abandoned (observing them) since I heard (from so and so).