The Kushans returned to Margiana in the 1st century AD and helped the satrap Sanabares declare himself king who ruled from ca.
In 642 AD, after the Sasanian disaster at the hands of the Rashidun Caliphate at the Battle of Nihawand, much like Darius III, the last Sasanian king, Yazdegerd III, fled eastward and arrived in Margiana in 651 AD [REF].