Sahih Muslim Book 2, Hadith Number 432.

Chapter : Merit of Wudu.

Abu Malik at-Ash’ari reported: The Messenger of Allah (may peace be upon him) said: Cleanliness is half of faith and al-Hamdu Liliah (Praise be to Allah) fills the scale, and Subhan Allah (Glory be to Allah) and al-Hamdu Liliah (Praise be to Allah) fill-up what is between the heavens and the earth, and prayer is a light, and charity is proof (of one’s faith) and endurance is a brightness and the Holy Qur’an is a proof on your behalf or against you. All men go out early in the morning and sell themselves, thereby setting themselves free or destroying themselves.