Panini was a Sanskrit grammarian who gave a comprehensive and scientific theory of
phonetics, phonology, and morphology.
Panini is considered the founder of the language and literature.
The dates given for Panini are pure guesses.
Experts give dates in the 4th, 5th, 6th and 7th century BC and there is also no agreement among historians.
all these guesses are pre-Mauryan or closer in time to the period of Ashoka.