Battle of al-Qādisiyyah
According to Arab historians, during the Battle of al-Qādisiyyah the Persian commander Rostam Farrokhzād refused to provide the Paygan troops with food and water the night before the battle. Instead, in the Arab camp, all soldiers there were being provided with supplies, including the peasants. This may be the reason why many of the Paygan soldiers in the army defected to the Arab side before and after the battle. In the Battle of Dara, for instance, the Paygan dropped their shields and abandoned the fields when the Savaran heavy cavalry was defeated.