Fair point as I'd chosen to use Hindi (culture) rather than India (geographic region), though of course India itself derives from Hindi (the word).
A fuller set of candidate languages, from Wikipedia: Hindi, Urdu, Kannada, Malayalam, Sanskrit, Tamil, Teluga, Bengali, Assamese, Bengali, and Marathi.
I'm sure someone will pitch in with specific sub-dialects as well shortly.
I'd reported languages based on Wikipedia's citing. That's publicly-editable, and if you have sourced references the links I'd provided can be updated.
From Urdu from Persian.
Persian and Sanskrit are closely related and thought to have originated from a common Proto-Indo-Iranian language from about 4000 years ago.