The Ghata Avasthâ.
In the second stage, the airs are united into one and begin moving in the middle channel. The Yogî's posture becomes firm, and he becomes wise like a god. 71.
By this means the Viṣṇu knot (in the throat) is pierced which is indicated by highest pleasure experienced, And then the Bherî sound (like the beating of a kettle drain) is evolved in the vacuum in the throat. 72.