It is narrated from Sayyiduna Talhah bin Ubaidullah (may Allah be pleased with him) that a Bedouin came to the Messenger of Allah (peace and blessings be upon him) and said: "O Messenger of Allah! What is Islam?" He (peace and blessings be upon him) said: "Five prayers in a day and night." He said: "Is there any prayer upon me besides these?" He (peace and blessings be upon him) said: "No." Then he asked about fasting, and he (peace and blessings be upon him) said: "The fasts of Ramadan." He said: "Is there any fast upon me besides these?" He (peace and blessings be upon him) said: "No." Then zakat was mentioned, and he said: "Is there any zakat upon me besides this?" He (peace and blessings be upon him) said: "No." Finally, he said: "By Allah! I will neither add to these acts of worship nor decrease from them." The Messenger of Allah (peace and blessings be upon him) said: "If he has spoken the truth, he has succeeded."