 Until the mid @-@ 17th century , both <unk> and district ( <unk> ) accounts had been prepared in the language and script of Kannada , the region 's traditional language . However , after the Bijapur invasions , Maratha chieftains came to wield authority in the region and brought in with them various officials who introduced the Marathi language and script into the " public accounts " . The new language even found its way into lands ruled by some poligar chiefs . These chieftains had brought in Marathi @-@ speaking horsemen from the northern Bijapur realms for their newly formed cavalry units and resorted to hiring Maratha accountants for the benefit of these cavalrymen . After the province of Sira was created , the official language of the Moghul empire , Persian , came to be used . 
