Madhu-vidya is described in the Brihadaranyaka Upanishad II.v.1-19, and in the Chandogya Upanishad III 1-5. Madhu-vidya or 'Honey-knowledge' is that of the supreme Bliss of the Self; it is an important Vedic teaching. This knowledge is meant to be communicated by the teacher to the disciple, by father to the son – who is worthy and inwardly ready. Indra taught Madhu-vidya to Rishi Dadhichi with a warning that it should not be communicated to anyone else.