"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."
Sunan an-Nasa'i Book 24, Hadith 19
← Previous Hadith (Another chain) with a similar report narrated from Ibn 'Abbas. (sahih)

Sunan an-Nasa'i Book 24, Hadith 18 Next Hadith → "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)

Sunan an-Nasa'i Book 24, Hadith 20