Abu Nasr Muhammad

He was from an Iranian princely family which ruled Gharchistan, and bore the title of Shar (meaning "greatness and lordship").

Abu Nasr lived during the lifetime of his suzerain, the Samanid ruler Nuh II (r. 976 – 997).

When his son became an adult, Abu Nasr abdicated in favor of him, and began completely focusing on increasing his knowledge.

However, in 994, the Simjurid rebel Abu 'Ali Simjuri, whose family's power had grown strong, invaded Gharchistan, thus forcing Abu Nasr Muhammad and his son Shah Muhammad to flee from their homeland to a fortress, where they fortified themselves.

Abu Nasr later died in 1015 or 1016, but his family is some decades later mentioned as serving the Ghurids.