"The Messenger of Allah said: 'from one 'Umrah to another is an expiation for what comes in between, and Hajj al-Mabrur brings no reward less than Paradise.'''(sahih)
"The Messenger of Allah said: 'Perform Hajj and 'Umrah consecutively, for they remove poverty and sin as the bellows removes impurity from iron and gold and silver, and Hajj Al-Mabrur brings no less a reward than Paradise.'''
a woman vowed to perform Hajj but she died. Her brother came to the Prophet and asked him about that, he said: 'Do yhou think that if your sister owed a debt you wouold pay it off?' He said: 'Yes.' He said: 'Then fulfill the right of Allah, for He is more deserving that His rights should be fulfilled.'''
"The wife of sinan bin Salamah Al-Juhani ordered that the question be put to the Messenger of Allah about her mother who had died and had not performed Hajj; would it be good enough if she were to perform Hajj on behalf of her mother? He said: 'Yes. If her mother owed a debt and she paid it off, would that not be good enough? Let her perform Hajj on behalf of her mother.'''
a woman from Khath'am asked the Prophet on the morning of the Day of Sacrifice: "O Messenger of Allah! The command of Allah to His slaves to perform Hajj has come, while my father is an old man and cannot sit firmly in the saddle. Can I perform Hajj on his behalf?" He said: "Yes. "
"O Messenger of Allah! My father is an old man who cannot perform Hajj or 'Umrah, nor can he travel." He said "Perform Hajj and 'Umrah on behalf of your father."
"A man from Khath'am came to the Messenger of Allah and said: 'My father is an old man who cannot ride, and the command of Allah to perform Hajj has come. Will it be good enough if I perform Hajj on his behalf?' He said: 'Are you the oldest of his children?' He said: 'Yes.' He said: 'Don't you think that if he owed a debt you would pay it off?, He' said: 'Yes.' He said: 'then perform Hajj on his behalf.'''(Daif)