Sa'ad ibn Abi Waqqas(ra) The Knight of Islam Session 46 Umar(ra) grieving about receiving the treasures of the world. Why is unnecessary wealth dangerous and can lead to destruction? Sa'ad ibn Abi Waqqas(ra) writes a letter to Umar(ra) about the situation in Qaadiseeyah. Umar(ra) concern and great anticipation for news to come from Qaadiseeyah. Umar(ra) orders Sa'ad ibn Abi Waqqas(ra) to march to the Persian capital Ctesiphon(Al-Madaain).