Yajnavalkya (Sanskrit: याज्ञवल्क्य, Yājñavalkya) is a revered Vedic sage of Hinduism. He is mentioned in the oldest Upanishadic scriptures, and likely lived in Videha kingdom of northern Bihar around the 8th century BCE, or 7th century. Yajnavalkya is credited to be the one who coined the word Advaita (non-dual, monism), one of the important traditions within Hinduism. Numerous texts are attributed to him, such as the Yajnavalkya Smriti, Yoga Yajnavalkya and texts of the Vedanta school. He is also mentioned in various Brahmanas, Aranyakas and Upanishads.