Adhyaya 8: Yogasthanas, Ashtanga Yoga, Pranayama-Siddhi, and Shiva-Dhyana leading to Samadhi
नाभेरधस्ताद्वा विद्वान् ध्यात्वा कमलमुत्तमम् त्र्यङ्गुले चाष्टकोणं वा पञ्चकोणमथापि वा
nābheradhastādvā vidvān dhyātvā kamalamuttamam tryaṅgule cāṣṭakoṇaṃ vā pañcakoṇamathāpi vā
Ang marunong na sādhaka ay dapat magnilay sa kataas-taasang lotus sa ibaba ng pusod; at doon ay pagbulayan ang anyong yantra—maaaring walong-sulok o limang-sulok—na may sukat na tatlong lapad ng daliri.
Suta Goswami (narrating Shiva-oriented worship instructions within the Linga Purana discourse)
It links external Linga-puja to inner upasana by prescribing a specific dhyana-seat (below the navel) and a measured yantra-form, showing that worship of Pati (Shiva) is stabilized through disciplined visualization.
Shiva-tattva is approached as the inner focus of consciousness: the devotee (pashu) turns inward to a purified locus and form, loosening pasha (bondage) through ordered contemplation directed to Pati.
A Pashupata-leaning dhyana practice: meditating on the navel-lotus and installing a geometric mandala (octagon or pentagon) with precise measure (three finger-breadths) as part of Shiva-upasana.