مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2183
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Moosa biri Salamah said: Sinan bin Salamah and I set out, with two sacrificial animals, but they moved slowly for us on the road. Sinan said to me:How about going to Ibn 'Abbas? So we went to him and Sinan asked him.... And he mentioned the hadeeth. And he said: And Ibn 'Abbas said: alJuhani asked the Messenger of Allah : O Messenger of Allah, my father is an old man and he did not do Hajj. He said: “Do Hajj on behalf of your father."
Musnad Ahmad 2189Its isnad is saheeh, Muslim (1325)]