came within 18 farsakhs of the summer capital of Zunbils in the Qandahar region. The plan of the Zunbils worked and they trapped the Arabs into a valley. Ubaidallah realizing the gravity of the situation, offered 500,000 or 700,000 dirhams as well as his three sons along with some Arab leaders as hostages while promising not to raid again during his tenure as Sistan's governor. Shuraih, who had earlier advised retreat, felt a withdrawal would be dishonorable. He was joined by a group of people into the battle, and all but a handful of them were killed. The remnant of the Arab army withdrew back to Bust and Sistan, suffering from starvation and thirst. Many died in the "Desert of Bust", presumably the Registan Desert, with only 5,000 making it back to Bust. Many of those who survived died by gorging themselves on the food sent to them according to Tabari. Ubaidallah had arranged food for them after seeing their suffering and himself died, either from grief or an ear affliction. Al-Hajjaj prepared another expedition in 699, reportedly of 40,000 troops from Kufa and Basra under Abdurrahman b. Muhammad b. al-Ash'ath. Though disguised as a military expedition, it was actually a forced migration of the elements from the two Iraqi cities troublesome to Hajjaj. It was equipped to the best standards and was called the "Army of Peacocks" because of the men included in its ranks. It included the proudest and most distinguished leaders of Iraq led by Ibn al-Ash'ath, grandson of Al-Ash'ath ibn Qays. It also included distinguished elders who served in the first armies of conquest as well as those who fought at Battle of Siffin. This Arab army arrived in Sistan in the spring of 699. The Arabs advanced east into Zabulistan and won several victories. However the troops did not want to fight in this inhospitable region and started becoming restive. Al-Hajjaj instructed them to continue the advance into Zabulistan's heart no matter what it took, making it clear to them he wanted them to return to their homes. Ibn al-Ash'ath also made an agreement with the Zunbils, that no tribute would be demanded if he won and in case he lost, he would be sheltered to protect him from Al-Hajjaj. The troops mutinied against Hajjaj's enforced emigration and returned to Iraq but were crushed by the Syrian troops. They fled back to the east while