Verse 81madhyajihve sphāritāsye madhye nikṣipya cetanām ।
hoccāraṃ manasā kurvaṃs tataḥ śānte pralīyate ॥Let the jaw go slack and the mouth open, with the tongue in the middle [pointing up] and cast awareness into the center. Doing uccāra of HA mentally, one will then dissolve into stillness.