Sayyiduna Abu al-Darda' (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "Recite 'Subhanallah' (Glory be to Allah), 'Al-hamdu lillah' (All praise is for Allah), 'La ilaha illallah' (There is no deity except Allah), 'Allahu akbar' (Allah is the Greatest) and 'La hawla wa la quwwata illa billah' (There is no power and no strength except with Allah), for these are the enduring good deeds; they wipe away sins just as a tree sheds its leaves, and they are among the treasures of Paradise."
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأذكار / 16855