Narrates the facts of the Battle of Qadisiyah that enabled Muslims to conquer Persia in 636 AD in order to spread Islam, which was led by Saad bin Abi Waqqas, after the death of Al-Muthanna bin Haritha Al-Shaibani, the leader of the Islamic armies during the era of the Caliph, where he forms an army of 30,000 warriors in order to confront the Persian armies.