Sahih Bukhari Volume 008, Book 075, Hadith Number 376.

Narated By Mus'ab : Sa'd used to recommend five (statements) and mentioned that the Prophet I used to recommend it. (It was) "O Allah! I seek refuge with You from miserliness; and seek refuge with You from cowardice; and seek refuge with You from being sent back to geriatric old age; and I seek refuge with You from the affliction of this world (i.e., the affliction of Ad-Dajjal etc.); and seek refuge with You from the punishment of the grave."