The sacred seed-letter that symbolizes Buddha Vajrayogini, an enlightened Deity of Highest Yoga Tantra who is the manifestation of the wisdom of all Buddhas. It is important to recognize that Vajrayogini and her seed-letter are the same nature, and in Vajrayogini practice we imagine that she arises from this letter. By visualizing or reciting this seed-letter with strong faith and concentration we invoke the great power of this holy being and receive her blessings.