Al-Afshin's career came to an end when he was imprisoned on allegations of treason and apostasy in 841, and this likely resulted in a decline in the importance of the Ushrusaniyya. Al-Ya'qubi notes that after al-Afshin's death, the Turkish commander Wasif al-Turki and his followers took up residence in al-Matira during the caliphate of al-Wathiq (r. 842-847), and it is possible that the Ushrusaniyya were displaced from that area and forced to settle elsewhere in the city. The regiment survived, however, and continued to be used in military campaigns. In 847, for example, they participated in Bugha al-Kabir's expedition against the disorderly Banu Numayr in western Arabia, during which they were under the command al-Afshin's former lieutenant Wajin al-Ushrusani.