The messenger of Allah said: "Purity is half of faith. alhamdu-lillah [Praise be to Allah] fills the scales, and subhana-Allah [How far is Allah from every imperfection] and alhamdu-lillah [Praise be to Allah] fill that which is between heaven and earth. Prayer is light; charity is a proof; patience is illumination; and the Quran is an argument for or against you. Everyone starts his day and is a vendor of his soul, either freeing it or bringing about its ruin."
Related by Muslim.