"This kalā, which is the light of all things, presents itself, when devoid of emission, in the form of serpentine-power (śakti kuṇḍalikā), therefore in the form of serpentine-vital breath, and, at the extremity (prāntadeśe) of the emission, in the form of a supreme serpentine. This kalā is variously called the "ether of Śiva", "place of the self", "place of brahman". (Triśirobhairava Tantra)"