It is narrated from Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him), he says: The Messenger of Allah (peace and blessings be upon him) took my hand and said: O Abu Sa'id! There are three words, whoever utters them will enter Paradise. I said: O Messenger of Allah! What are they? He (peace and blessings be upon him) said: Whoever is pleased with Allah as his Lord, with Islam as his religion, and with Muhammad (peace and blessings be upon him) as his Messenger. Then he (peace and blessings be upon him) said: O Abu Sa'id! There is also a fourth thing, whose virtue is as great as from the sky to the earth, and that is striving in the path of Allah.