It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Indeed, a single good trait may be found in a man, and because of it Allah Almighty sets right all of his deeds. So a man's purifying himself for his prayer becomes an expiation for his sins, and his prayer becomes supererogatory (for raising his ranks further)."
Hadith Referenceالمعجم الأوسط / باب الميم / 7102
Hadith Takhrij«أخرجه أبو يعلى فى «مسنده» برقم: 3297، والبزار فى «مسنده» برقم: 7000، وابن حجر فى «المطالب العالية» برقم: 82 / 1، 82 / 2، والطبراني فى «الأوسط» برقم: 2006»