Assertion: caliphate's treasury | /r/HasProperty | linked with the military's iqtaʿ system
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text: To that end, in 1387, Barsbay established direct control over Alexandria, the principal Egyptian commercial port, thereby transferring the tax revenues of the port to the sultan's personal treasury (diwan al-khass) instead of the imperial treasury which was linked with the military's iqtaʿ system.