I shall now describe to you a subject which is a greater mystery than this, a subject connected with the Soul, which is above the ordinary understandings of human beings, which has been seen by the foremost of Rishis, what has been treated in the Upanishads, and which forms the topic of your inquiry.
अतो गुह्यतरार्थं तदध्यात्ममतिमानुषम्। यत् तन्महर्षिभिर्दृष्टं वेदान्तेषु च गीयते॥ तत् तेऽहं सम्प्रवक्ष्यामि यामि यन्मां त्वं परिपृच्छसि।।२