It is narrated from Sayyidah Umm Habibah (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever keeps regularly to four rak'ahs before Zuhr and four after it, Allah will make him forbidden to the Fire of Hell."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19746