What can you tell us about Qudama bin Maz'un, the warrior of the battle of Badr and the maternal uncle of `Abdullah bin `Umar and Hafsa, whom the Prophet Muhammad (saw) appointed as ruler of Bahrain?
 Narrated `Abdullah bin `Amr bin Rabi`a:                     who was one of the leaders of Bani `Adi and his father participated in the battle of Badr in the company of the Prophet. `Umar appointed Qudama bin Maz'un as ruler of Bahrain, Qudama was one of the warriors of the battle of Badr and was the maternal uncle of `Abdullah bin `Umar and Hafsa.