मुनिमोहशमनम्
Pāśupata-yoga, Siddhis, Puruṣa-darśana, Saṃsāra, and Prāṇa-Rudra Pañcāhutī
तदेनं सेतुमात्मानम् अग्निं वै विश्वतोमुखम् हृदिस्थं सर्वभूतानाम् उपासीत महेश्वरम्
tadenaṃ setumātmānam agniṃ vai viśvatomukham hṛdisthaṃ sarvabhūtānām upāsīta maheśvaram
因此当礼敬彼大自在天:祂为内在之我(Ātman),亦为圣桥(setu)令众得度;祂实为面向十方之火,安住于一切众生之心。
Suta Goswami (narrating Linga Purana teachings to the sages of Naimisharanya; presenting an upasana instruction)
It shifts Linga-upasana from merely external rite to inner realization: Maheshvara is to be worshipped as the indwelling Pati in the heart of every pashu, the ‘bridge’ that carries the soul beyond pasha (bondage).
Shiva is presented as Ātman and Antaryāmin—present in all beings—also as viśvatomukha (all-facing/all-pervading) and as Agni (conscious, purifying tejas), indicating His immanence without losing His lordship as Maheshvara.
Upāsanā as inner meditation: contemplating Maheshvara as the hṛdistha Agni—the inner sacrificial fire—so the pashu turns inward toward Pati, loosening pasha through steady awareness and devotion.