Nija-shakti

Nija-shakti

निज-शक्ति, nija-śakti 

The inner energy of Shiva, "His own". The concomitant with Shiva, following His will, (manifested) as dharma and adharma.

She has five qualities: Eternity (nityatā), Stainlessness (nirañjanatā), Vibrationlessness (niṣpandatā), Unreflectingness (nirābhāsatā) and Unawakenedness (nirutthānatā).

Now it will be told of the Nija-shakti, indistinguishable [from Paramashiva], which is the form of the highest Consciousness. She is always vigilant, supporting [the existence] of all pindas. This shakti is the immediate basis [of all things]. The whole cycle of manifestation grows out of it – the result of action, action and actor, She creates the [himself] Creator. She, the image of Consciousness, the Supreme, the ultimate light of essence, self-comprehensible, cognizable only in [immediate] experience, a Witness revealed in the writings of the world, is glorified as Shakti. This same Shakti, when she is revealed in her own nature during the unmanifested [world], is Shiva himself.

"Siddha-siddhanta paddhathi", Gorakshanath (translated from Sanskrit by Guru Shri Yogi Matsyendranath Maharaj)