Abu Ubaydah narrates that Sayyiduna Abdullah (may Allah be pleased with him) struck Abu Jahl but could do nothing to him. Abu Jahl said: "The little shepherd of yesterday?" Abdullah (may Allah be pleased with him) said: "That is me." Then he took his (Abu Jahl's) sword and struck him with it until he killed him.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8436