
Originally Posted by
Encyclopedia Iranica
The amount of Persian literature composed in the Indian subcontinent up to the 19th century is larger than that produced in Iran proper during the same period (Schimmel, p. 1). From the very beginning of the Muslim invasion of northern India, Persian, as the language of the Ghaznavid court, gradually achieved the status of the most prestigious language of an increasingly large region, whose subjects were mostly Indian and the rulers predominantly Turkish.