Sahih Bukhari Volume 008, Book 075, Hadith Number 386.
Narated By 'Aisha : The Prophet used to say, "O Allah! I seek refuge with You from laziness from geriatric old age, from being in debt, and from committing sins. O Allah! I seek refuge with You from the punishment of the Fire, the afflictions of the grave, the punishment in the grave, and the evil of the affliction of poverty and from the evil of the affliction caused by Al-Masih Ad-Dajjal. O Allah! Wash away my sins with the water of snow and hail, and cleanse my heart from the sins as a white garment is cleansed of filth, and let there be a far away distance between me and my sins as You have set far away the East and the West from each other."