Upanishads are the fourth or last level of Vedic literature. The literal meaning of the word Upanishad is that one has to sit in solitude with the guru and receive knowledge, that is, occult knowledge. However, according to usage, the word refers to special books written in the last stage of Vedic literature. The four sections of the books included in the Vedic literature are the Sanhita, the Brahman, the Aranyaka and the Upanishads. However, according to the Vedic tradition, the forest belongs