When Mithredath arrived in Peiraieus on his mission for Khsrish IV, he sought the satrap's residence. Since it was evening, he was challenged by the Guard at the door who opened a small observation window when he knocked. Mithredath replied he was a servant of Khsrish, King of Kings and on a mission given to him by Khsrish's own lips. Further, he wished to discuss this mission with the satrap. This so startled the Guard that he dropped his spear. The Guard then flung open the door and invited Mithredath in while bowing low.