One occupies the Supreme Soul proportionate to what is occupied in one's own soul by Vedic sound. He who can always realise the identity of all things with his own self, forsooth, acquires immortality.
यावानात्मनि वेदात्मा तावानात्मा परात्मनि। य एवं सततं वेद सोऽमृतत्वाय कल्पते॥