Mantrarāja-sādhana Prakāra & Tripurā/Lalitā–Kāmākṣī Tattva
Lalitopākhyāna Context
ब्रह्मादीनां त्रयाणां च तुरीयस्त्वीश्वरः प्रभुः / चतुर्णामपि सर्वेषामादि कर्ता सदाशिवः
brahmādīnāṃ trayāṇāṃ ca turīyastvīśvaraḥ prabhuḥ / caturṇāmapi sarveṣāmādi kartā sadāśivaḥ
Above the three—Brahmā and the rest—stands the Fourth: Īśvara, the Lord abiding in Turīya. And Sadāśiva is the primordial creator of all four.