It is narrated from Sayyidah Umm Habibah (may Allah be pleased with her), who relates from the Messenger of Allah (peace and blessings be upon him) that he (peace and blessings be upon him) said: "Whoever prays twelve rak'ahs in a day, Allah will build for him, by means of them, a house in Paradise: four rak'ahs before Zuhr, two rak'ahs after Zuhr, two rak'ahs before Asr, two rak'ahs after Maghrib, and two rak'ahs before Fajr."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19737