Al-Istakhri wrote that "Khakan nominal power ... even though Hakan and above the king, but the king appoints him"  Ibn Rust adds: "King does not report to anyone who would stand above it .. . he manages derived taxes and hiking walks with his troops ". The troops had to deliver, apparently on the basis of the vassal relationship feud-lysed nobility, "as they are by the number of his property." In addition, the king had an army of 10-12 thousand men, who were on the payroll. The state was developed by the bureaucracy: the rulers of port cities and conquered tributary provinces (Tudun), tax collectors, judges, and probably even the police, whose role can perform the soldiers of the royal army (Larissa) .