나티야샤스트라 is an ancient Indian treatise on performing arts, attributed to the sage Bharata Muni. It is considered a foundational text for classical Indian dance and drama, detailing various aspects of performance, including acting, music, and stagecraft. The text is divided into several chapters, covering topics such as rasa (emotional experience), bhava (mood), and the technical aspects of dance and theater. It serves as a guide for artists, helping them understand the principles of expression and the importance of storytelling in performance.