Explanation:

Panini was an ancient Indian scholar who is known for his contributions to the field of linguistics. He is believed to have lived around the 4th century BCE and is considered to be one of the most important figures in the development of the Sanskrit language.

Panini's work is known as the Ashtadhyayi, which is a comprehensive treatise on Sanskrit grammar. The Ashtadhyayi is written in sutra form, which means that it is composed of short, concise statements that are meant to be memorized by students. The work is divided into eight chapters, each of which deals with a different aspect of Sanskrit grammar.

Panini's grammar is based on a set of rules that are known as the shivasutras. These rules are designed to capture the essential features of Sanskrit and to provide a systematic way of analyzing and understanding the language. The shivasutras are organized into groups, each of which is associated with a particular aspect of grammar.

In addition to the shivasutras, Panini's grammar also includes a set of rules known as the ganas. These rules are based on the idea that certain sounds and letters are related to each other in specific ways. By understanding these relationships, students of Sanskrit can learn to recognize patterns in the language and to apply these patterns in their own writing and speech.

Overall, Panini's grammar represents a major milestone in the development of Sanskrit and is still studied and admired by linguists today. His work has had a profound influence on the study of language and grammar, not just in India but throughout the world.

Panini, the first Grammarian of Sanskrit language in India, lived during the AD 5th - 6th century