In 969 the Saffarid Abu Ahmad Khalaf arrived at the Samanid court, requesting assistance against his brother Abu'l-Husayn Tahir. Military aid was given, although Tahir's death in 970 proved much more effective than the Samanid assistance. Tahir's son Husayn eventually continued the struggle, and gained the support of the Samanids; the tribute sent by Khalaf subsequently ceased.