Musnad Ahmad 32:203

Yahya narrated to us, al-Taymi narrated to us, from Anas, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said on the day of Badr: "Who will see what Abu Jahl has done?" So Ibn Mas'ud set off and found the two sons of 'Afra' had struck him until he grew cold. He took him by his beard and said: "Are you Abu Jahl?" He replied: "Is there anything greater than a man you have killed, or whom his people have killed?"