[1] Sometime around Nuh's ascension, the Karakhanids invaded and captured the upper Zarafshan Valley, where the Samanid silver mines were located.
Utbi, however was focused on removing Abu'l-Hasan Simjuri, the Samanid governor of Khorasan.
Utbi considered Abu'l-Hasan Simjuri to be too powerful; he managed to remove him from the post in 982.
An expedition against the Buyids was mobilized in Khorasan, also in 982; it was initially successful, but the Samanid forces were subsequently crushed.
Utbi attempted to regroup the army, but was assassinated by representatives of Abu'l-Hasan Simjuri and Fa'iq.