It is narrated from Sayyiduna Ibn Amr (may Allah be pleased with him) that once I presented myself before the Noble Prophet (peace and blessings be upon him) and said, "O Messenger of Allah! Give me a command regarding fasting." The Noble Prophet (peace and blessings be upon him) said: "If you fast one day, you will get the reward of nine." I requested an increase in this, so he said: "If you fast two days, you will get the reward of eight." I requested further increase, so he said: "If you fast three days, you will get the reward of seven." Then the Noble Prophet (peace and blessings be upon him) kept decreasing until finally he said: "The best way of fasting is that of Sayyiduna Dawood (peace be upon him), so fast one day and leave one day." When Sayyiduna Abdullah bin Amr (may Allah be pleased with him) became old, he used to say, "Alas! If only I had been content with the command of the Noble Prophet (peace and blessings be upon him)."