Battle of Jalula

The Battle of Jalula was fought in 16 AH / 637 CE, shortly after the decisive Battle of al-Qadisiyyah and the fall of Ctesiphon. The retreating Persian forces regrouped at Jalula (meaning 'the dyed/colored'), a strategic position on the road to Media and the Iranian plateau. Sa'd ibn Abi Waqqas dispatched Hashim ibn Utbah with 12,000 troops. After a prolonged siege of the Persian fortifications lasting several months, the Muslims broke through and inflicted a crushing defeat, killing the Persian commander Mihran. The Persian royal family and treasures fled northward. The Battle of Jalula opened the door to the conquest of Media and the Iranian highlands, making it one of the most consequential victories of the Rashidun era.