"A man said: 'O Messenger of Allah! My father has died and he did not perform Hajj; shall I perform Hajj on his behalf?' He said: 'Don't you think that if your father owed a debt you would pay it off?' The man said: 'Yes.' He said: 'The debt owed to Allah is more deserving (of being paid off)."'
Sunan an-Nasa'i Book 24, Hadith 21
← Previous 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 Next Hadith → a man asked the Prophet "The command of ) Hajj has come while my father is an old man and cannot sit firmly in his saddle; if I tie him (to the saddle) I fear that he will die. Can I perform Hajj on his behalf?" He said: "don't you think that if your father owed a debt and you paid it off, that would be good enough?" He said: "Yes." He said: "Then perform Hajj on behalf of your father. "

Sunan an-Nasa'i Book 24, Hadith 22