She is enlightened spontaneity in female form,
A supremely blissful divine yogini.
She is the mansion of enlightened awareness,
Possessor of the five Buddha-wisdoms…
She is pure, universal awareness,
The sovereign of the mandala.
She is Nairatmya Yogini,
The essence of ultimate reality.

~ Hevajra tantra

Nairatmya (tib. Dagmema) is a meditational deity and the divine consort of Hevajra. There are many different forms and combinations of forms for the two deities, alone, or as a couple in ecstatic embrace.

Nairatmya is subtle and spacious and vast as the sky. Her body is blue, the color of infinite space, reflecting the limitless expanse of her awareness. Buddhism teaches that what we perceive ourselves to be — namely, idependent, separate selves — is an illusion, for in truth we are connected with all that exists in a vast web of communion. Nairatmya embodies this realization.

Her name may be translated as ‘Lady of Emptiness’ or ‘She Who Realized Selflessness.’ Like the element of space, she flows through the universe without impediment, for she has transcended ego-centered existense. Her eyes blaze with the wisdom of one who understands the mysteries and depths of life. She raises her curved knife skyward, poised to sever negative mindstates wherever they arise. In her skull bowl, she pulverizes illusions and returns them to their original state — a mere play of light, a rainbow of energy, shimmering in empty space. Thus, Nairatmya perpetually dances, celebrating the bliss that pulses at the heart of reality. Her gleaming bone ornaments sway, glistening like cascading beads of light, illuminating the heavenly expanse of her body with shooting stars and swirling galaxies. To behold Nairatmya is to long to join in her cosmic, eternal dance.

Nairatmya, like other female Buddhas, embodies the supreme state of Buddhahood. Knowing all that is to be known, she manifests a divine form that expresses this completeness, inviting others to strive for the highest level of spiritual awakening.  Accordingly, the goal of her practice is the attainment of full enlightenment, or Buddhahood.

In Tantric Buddhism, enlightenment is characterized as the realization of emptiness and supreme bliss. Both qualities figure prominently in Nairatmya’s divine persona. One meaning of her name is ‘Lady of Emptiness’. Emptiness (niratman, or shunyata) denotes the intrinsic insubstantiality of all phenomena.  Nairatmya is also celebrated as a “supremely blissful divine yogini,” “bestower of bliss,” “bliss personified,”, “source of great bliss”, and “font of spontaneous joy.” The bliss that Nairatmya personifies is beyonf the realm of sense experience. Described as “spontaneously arising joy”, it is an intrinsic quality of being that emerges spontaneously — that is without addtitional effort — when the illusions have been dispelled.

Source: Buddhist Goddesess of India by Miranda Shaw; Hevajra Tantra.