Sanskrit is an ancient and classical language of India in which ever first book of the world Rigveda was compiled. The Vedas are dated by different scholars from 6500 B.C. to 1500 B.C. Sanskrit language must have evolved to its expressive capability prior to that. It is presumed that the language used in Vedas was prevalent in the form of different dialects. It was to some extent different from the present Sanskrit. It is termed as Vedic Sanskrit. Each Veda had its book of grammar known as Pratishakhya. The Pratishakhyas explained the forms of the words and other grammatical points. Later, so many schools of grammar developed. During this period a vast literature -Vedas, Brahmana-Granthas, Aranyakas, Upanishads and Vedangas had come to existence which could be termed as Vedic Literature being written in Vedic Sanskrit.