Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) delivered a sermon to the people and said: "O people! Allah has made Hajj obligatory upon you." A man stood up and asked: "Is it every year?" He repeated this three times, while the Messenger of Allah (peace and blessings be upon him) kept turning 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 he said: "Leave me as long as I leave you (do not ask me unnecessary questions). Those before you were destroyed only because of their excessive questioning of their prophets and their disagreements with them. When I command you regarding something, do it as much as you are able, and when I forbid you from something, then avoid it."

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "Whatever matters I leave you with, then leave me with them (do not ask me about them). The people before you were destroyed because of asking too many questions of their prophets and differing with them. So when I command you regarding something, act upon it as much as you are able, and when I forbid you from something, then abstain from it."