The Krishna Upanishad (Sanskrit: कृष्ण उपनिषत्) or Krishnopanishad is one of 108 Upanishads of Hinduism, written in the Sanskrit language. It is a minor Vaishnava Upanishad, dedicated to the god Krishna, and adheres to the tradition of Vaishnavism. The Krishna Upanishad is attached to the Atharvaveda. The Upanishad narrates how the god Rama took birth as Krishna, and how various divinities and virtues became people or objects in Krishna's life. Source: Wikipedia (en)