Sa’d Ibn Mu’az

SA’D IBN MU’AZ. صهد بن معاز
The chief of the Banu Aus. He embraced Islam at al-Madinah after the first pledge at ‘Aqabah. He died of wounds received at the battle of the Ditch, A.H. 5. (See Muir’s Life of Mahomet,. vol iii. 282.)

Based on Hughes, Dictionary of Islam