In the third type, the yogi first visualizes themselves in the illusory form of a chosen deity and imagines the channels and chakras, with syllables in each chakra. Then they practice the pot belly breathing ("bum pa can, *kumbhaka"), holding their breath in the abdomen while imagining that the syllables are moving in the central channel, opening up the channel at the crown of the head. At the time of death, when the yogi does this exercise, the letter in the heart chakra is shot out of the body through the crown and merges with the heart of the lama who has been visualized in front of the yogi. Imagining that the lama is also essenceless, the yogi rests in that state. When the yogi stops breathing and dies, their mind merges with natural Radiance and they achieve Buddhahood.