奥义书——吠陀传统的哲学核心，阐明梵、真我、知识、行动与解脱的本质。十部主要奥义书，另加精选的毗湿奴派小奥义书。
On Dattātreya — the son of Atri, in whom tradition sees an appearance of the Lord Himself: name, mantra, form. Hence its chief word: He did not give a gift, He "gave Himself."