Dhiraar participated in the first Muslim conquest of Persia under Khalid ibn al-Walid, which immediately occurred after Ridda wars. Dhiraar played pivotal role in the battle of Walaja as he was assigned as one of two cavalry commanders that tasked to lead detachments of Rashidun cavalries to struck the advancing Sassanid army from the rear and trap themin double envelopment maneuver strategy designed by Khalid.
