Before reading this entry, ideally one has cultivated the perception of visualizing tantric deities and other ‘purities’ while diligently meditating upon the yidam and retinue in the two processes, generation and completion, of a Highest Yoga Tantra sadhana. Through these transic absorptions, one’s subtle levels of consciousness are employed, and eventually the experience of three empty conditions arise: no causation, no elaboration, and no conceptual significance. With this experience of the true emptiness, one’s body becomes a clear light liquefaction of bodhicitta and the objects of one’s surroundings individually transform into ‘luminous and empty’ icons of the resultant stage. If this happens collectively, or all at once, there’s a ‘dawning’ within and without one and this is Mahamudra—a simultaneous arising of the highest gesture, mudra or icon—lasting as long as one’s accumulation of merit and wisdom assures its presence over a counter volition. This union of clarity...