“When an adept is sure that night has fallen, they should suppress the two fluctuating channels and approach the state of utter joy and so forth. Then, if they suppress all objects of knowledge in the navel maṇḍala, they will undoubtedly attain the bliss possessed by beings. The sensory objects will be burned by the fire of wisdom, and all will be illusion. In the future, they will be born in an excellent buddha field that is pure, stainless, and inconceivable to beings. A yogin who drinks milk will be as stainless as a bubble. When he expels the vital wind and is purified, he will achieve the virtue he has contemplated.”