The word
Śāstra literally means "that which has been instructed/decreed", from the root √śās- which means "instruction/decree" combined with the
ṣṭra-suffix.
Terminology Śāstra commonly refers to a treatise or text on a specific field of knowledge. In early
Vedic literature, the word referred to any precept, rule, teaching, ritual instruction or direction. •
Mokṣa-śāstra •
Artha-śāstra • Alaṅkara-śāstra (rhetoric) • Kāvya-śāstra (poetics) •
Saṅgīta-śāstra (music) •
Nāṭya-śāstra (theatre & dance) • Vyākaraṇa-śāstra (Sanskrit grammar), and others. In
Buddhism, a "śāstra" is often a commentary written at a later date to explain an earlier scripture or
sutra. For example, Yutang Lin says that a text written by him and not given by Buddha, cannot be called a "Sūtra"; it is called a "Śāstra". In Buddhism, Buddhists are allowed to offer their theses as long as they are consistent with the Sūtras, and those are called "Śāstras." In
Jainism, the term means the same as in
Hinduism. An example of Jaina Śāstra is the 12th-century
Yoga Śāstra of Hemchandracharya. Śāstra is sometimes the root of compounded Sanskrit words. A custodian of
Śāstra, for example, is called
Śāstradhāri (
Sanskrit: शास्त्रधारी). ==References in the early texts==