Sahih Bukhari Volume 8, Book 73, Hadith Number 237.

Narated By Um Salama : (One night) the Prophet woke up and said, “Subhan Allah ! How many treasures have been (disclosed) sent down! And how many afflictions have been descended! Who will go and wake the sleeping lady-occupants up of these dwellings (for praying)?” (He meant by this his wives.) The Prophet added, “A well-dressed soul (person) in this world may be naked in the “Hereafter.” ‘Umar said, “I asked the Prophet, ‘Have you divorced your wives?’ He said, ‘No.’ I said, ‘Allahu Akbar.'”