Yahya related to me from Malik from Yahya ibn Said from IbnShihab that the Messenger of Allah, may Allah bless him and grant himpeace, stood up in the night and looked at the horizon of the sky. Hesaid, "What treasures has the night opened? What trials have occurred?How many are dressed in this world and will be naked on the Day ofRising. Warn the women in their rooms."
USC-MSA web (English) reference: Book 48, Hadith 8
Arabic reference: Book 48, Hadith 1662