What is one of the battles that the Prophet Muhammad (saw) participated in while in the company of Ibn Abi `Aufa?
 Narrated Isma`il:                     I saw (a healed scar of) blow over the hand of Ibn Abi `Aufa who said, "I received that blow in the battle of Hunain in the company of the Prophet." I said, "Did you take part in the battle of Hunain?" He replied, "Yes (and in other battles) before it."