Shruti_

Śruti or shruti (Sanskrit: श्रुति, IAST: Śruti, IPA: [ɕruti]) in Sanskrit means "that which is heard" and refers to the body of most authoritative, ancient religious texts comprising the central canon of Hinduism. Manusmriti states: Śrutistu vedo vijñeyaḥ (Devanagari: श्रुतिस्तु वेदो विज्ञेयः) meaning, "Know that Vedas are Śruti". Thus, it includes the four Vedas including its four types of embedded texts—the Samhitas, the Upanishads, the Brahmanas and the Aranyakas. Śrutis has been variously described as a revelation through anubhava (direct experience), or of primordial origins realized by ancient Rishis. In Hindu tradition, they have been referred to as apauruṣeya (not created by humans).