Sahih Muslim Book 4, Hadith Number 965.

Chapter : Moderation in the articles of prayers and their shortening and perfection.

Abdullah b. Abu Aufa reported that the Apostle of Allah (may peace be upon him) used to recite (this supplication): O Allah! our Lord, unto Thee be praise that would fill the heavens and the earth and fill that which will please Thee besides (them). O Allah ! purify me with snow, (water of) hail and with cold water; O Allah, cleanse me from the sins and errors just as a white garment is cleansed from dirt.