Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates: The Prophet Muhammad (peace and blessings be upon him) addressed the people and said: O people! Indeed, Allah has made Hajj obligatory upon you. A man stood up and asked: Is it every year? He repeated this question three times, but the Prophet (peace and blessings be upon him) turned away from him. Then the Prophet (peace and blessings be upon him) said: If I had said yes, it would have become obligatory, and if it had become obligatory, you would not have been able to do it. Then the Prophet (peace and blessings be upon him) said: Leave me with what I leave you with; for those before you were destroyed only because of their excessive questioning of their prophets and their disagreements with them. So, when I command you to do something, do as much of it as you can, and when I forbid you from something, then avoid it.