It is narrated from Sayyiduna Ali (may Allah be pleased with him) that he was asked about the position of the Prophet (peace and blessings be upon him) on the day of the Battle of Badr, and he said: "On the day of Badr, the bravest and strongest of us was the one who stood side by side with the Messenger of Allah (peace and blessings be upon him), level with his (peace and blessings be upon him) knee."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Aban except Sayf."