From food to bliss: a son returns to his father five times, each time with a deeper answer to 'what is the Self?'
Dialogues in this Upanishad
Bhrigu Learns the Five Sheaths — 'Seek to know Brahman by tapas.' Five times Bhrigu thinks he has the answer — food, breath, mind, knowledge — and five times his father sends him back, until he reaches bliss.