Nada anusandhana – exploration of sound “OM”
Nada anusandhana – exploration of sound”OM” – Closing the ears, nose and mouth, a clear, clear sound is heard in the purified sushumna nadi.
Muktasane sthito yogi mudram sandhaya sambhavim/
Śrnuyad dakshine karne nadam antastham ekadhih//
The Hatha Yogi, sitting in Muktasana, concentrated in shambhavi mudra, should hear closely to the nada heard within the right ear. (Chapter -4, Verse 67).
Sravanaputanayanayughala Ghranamukhanam nirodhanam karyam /Suddhasushumnasaranau Sphutamamalah sruyate nadah//
Closing the ears, nose and mouth, a clear sound is heard in the cleansed sushumna nadi. (Chapter -4, Verse 68).