Yahya related to me from Malik from Yahya ibn Said from Amra bintAbd ar-Rahman that A'isha, the wife of the Prophet, may Allah blesshim and grant him peace, said, "The Messenger of Allah, may Allahbless him and grant him peace, used to pray subh and the women wouldleave wrapped in their garments and they could not yet be recognisedin the darkness."
Arabic/English book reference: Book 1, Hadith 4