SA'AD IBN MU'AADHSa'd lbn Mu'aadh was the leader of Al-Aws tribe. He is a handsome, gallant, tall man with a radiant face. Sa'd committed himself to Islam and withstood the hardships that ensued with much heroism and greatness.  He committed to Islam at the age of 31 and won martyrdom at 37. His contributions and opinion is indispensable and valued by  Prophet Muhammad (peace be upon him). Men around the messenger page 197 of 255