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: صوبہ فارس — Type: /location/province, /location