Sayyidah Umm Habibah (may Allah be pleased with her) says that the Messenger of Allah (peace and blessings be upon him) said: "Whoever prays twelve rak'ahs in a day and night, Allah will build for him a house in Paradise: four rak'ahs before Zuhr, two rak'ahs after it, two rak'ahs after Maghrib, two rak'ahs after Isha, and two rak'ahs before the Fajr prayer."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19739