The latter then planned to take the direct desert route from Zarang to Bust in pursuit of Ahmad, but found that all the wells along the route had been poisoned. Nevertheless, Ahmad was unable to stay ahead of ‘Abdallah, who defeated and captured him in battle near Bust on January 17, 923, ending for good Ahmad's term as amir.
The following then planned to take the direct desert route from Zarang to Bust in pursuit of Ahmad, but discovered that all the wells along the route had been poisoned. Meanwhile, Ahmad was unable to stay ahead of ‘Abdallah, who defeated and captured him in battle near Bust on January 17, 923, bringing an end to Ahmad's term as amir.