Tantra Sāra 1.004
sa viśvataijasaprājñaturīyātmāntarātmanām। paramātmajñānātmayujāṁ madrūpāṇāṁ ca vācakaḥ ॥4॥
They convey correspondingly the following forms of mine: Vishwa i.e. universe, taijasa i.e. vigour, prājna i.e. wisdom, turiya i.e. 4th state that is beyond awake, dream and sleep, ātma i.e. the essence, antarātma i.e. inner essence, paramatma i.e. supreme soul, and jnānātma i.e. root of intelligence.
A pictorial reprasentation of how everything is derived from the Pranava, 'Om':
