The آل بویہ was divided into a number of separate emirates , of which the most important were صوبہ فارس , رے (شہر) , and عراق . Generally , one of the emirs held a sort of primus inter pares supremacy over the rest , which would be marked by titles like Amir al-umara and شاہ .
Entity: رے (شہر) — Type: /location/city, /location