Panini's Ashtadhyayi is an ancient Sanskrit text composed by the grammarian Panini around the 4th century BCE. It serves as a comprehensive guide to the grammar of the Sanskrit language, consisting of eight chapters that outline rules for word formation, syntax, and phonetics. The text is known for its precision and systematic approach, making it a foundational work in the study of linguistics. The Ashtadhyayi employs a unique method of using meta-rules and concise sutras, which are short aphorisms that encapsulate complex grammatical concepts. This work has significantly influenced not only Sanskrit studies but also the development of modern linguistic theory, showcasing the sophistication of ancient Indian scholarship.