The Umayyad governors initially managed to suppress the unrest, although control over the Ferghana Valley was lost.[4][5] In 724 governor Muslim ibn Sa'id al-Kilabi and his army suffered a heavy defeat (the so-called "Day of Thirst") at the hands of the Türgesh when he tried to subdue Ferghana. This defeat pushed the Arabs on the defensive, and even though no pitched battles took place, over the next few years the Arab position in Transoxiana collapsed swiftly.[6][7]