"The Messenger of Allah addressed the people and said: 'Allah, the Mighty and Sublime, has enjoined upon you Hajj.' A man said: 'Every year?' He remained silent until he had repeated it three times. Then he said: 'If I said yes, it would be obligatory, and if it were obligatory you would not be able to do it. Leave me alone so long as I have left you alone. Those who came before you were destroyed because they asked too many questions and differed with their prophets. If I command you to do something then follow it as much as you can, and if I forbid you to do something then avoid it."'
Allah, Most High, has decreed Hajj for you. Al-Aqra' bin Habis At-Tamimi said: "Every year, O Messenger of Allah?" But he remained silent, then he said: "If I said yes, it would become obligatory, then you would not hear and obey. Rather it is just one Hajj."
"O Messenger of Allah, my fater is an old man and he cannot perform Hajj or 'Umrah, nor can he travel." He said: "Perform Hajj and 'Umrah on behalf of your father."(sahih)
"The Messenger of Allah said: 'Hajj al-Mabrur brings no reward other than Paradise, and from one 'Umrah to another is expiation for what came in between." (Shih)
"A man asked the Prophet 'O Messenger of Allah, which deed is best?' He said: 'Jihad in the cause of Allah.' He said: 'Then what?' He said: 'then Hajj Al-Mabrir.'''
"The Messenger of Allah said: 'Whoever performs pilgrimage to this House, and does not Yarfuth (utter any obscenity or commit sin), will go back as (on the day) his nother bore him.'''(sahih)
"I said: 'O Messenger of allah, shall we not go out and fight in jihad with you, for I do not think there is any deed in the qur'an that is better than jihad.' He said: 'No. the best and most beautiful (type) of jihad is Hajj to the House; Hajj Al-Mabrur. ''(sahih)