Adhyaya 8: Yogasthanas, Ashtanga Yoga, Pranayama-Siddhi, and Shiva-Dhyana leading to Samadhi
इति यो दशवायूनां प्राणायामेन सिध्यति प्रसादो ऽस्य तुरीया तु संज्ञा विप्राश्चतुष्टये
iti yo daśavāyūnāṃ prāṇāyāmena sidhyati prasādo 'sya turīyā tu saṃjñā viprāścatuṣṭaye
अशा प्रकारे जो साधक प्राणायामाने दहा प्राणवायूंवर सिद्धी प्राप्त करतो, त्याच्या अंतःकरणात प्रसादरूप कृपा प्रकट होते; ज्ञानीजनांनी सांगितलेल्या चार अवस्थांमध्ये हिला ‘तुरीय’ असे म्हणतात।
Suta Goswami (narrating Yoga teaching within the Linga Purana discourse)
It links inner discipline to Shiva’s grace: prāṇāyāma that steadies the ten vāyus generates prasāda (purity and divine favor), making the practitioner fit for Linga-upāsanā where the pashu approaches Pati with a clarified mind.
By pointing to turīya as the fruit of yogic mastery, it implies Shiva-tattva as the transcendent ‘fourth’—beyond ordinary states—realized when bondage (pāśa) is quieted and consciousness becomes lucid through grace.
Prāṇāyāma in a Pāśupata-Yoga frame—disciplining the ten vital airs—culminating in prasāda and entry into the turīya state.