Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) narrates that the Prophet (peace and blessings of Allah be upon him) said: "Do abundant good deeds that remain." It was asked: O Messenger of Allah! What is meant by this? The Prophet (peace and blessings of Allah be upon him) said: "It means reciting «سبحان الله», «الحمدالله», «الله اکبر», and «ولا حول ولا قوة»."