Shastra refers to a body of texts in Indian philosophy and religion that provide guidelines, rules, and teachings. These texts cover various subjects, including ethics, law, and spirituality, and are often considered authoritative in their respective fields. The term is derived from the Sanskrit word for "to teach" or "to instruct." There are many types of Shastra, such as Dharma Shastra, which deals with moral and legal principles, and Artha Shastra, which focuses on economics and statecraft. These texts have played a significant role in shaping Indian culture and thought throughout history.