उमामहेश्वरव्रतं—पञ्चाक्षरमन्त्रस्य माहात्म्यं, न्यासः, जपविधिः, सदाचारः, विनियोगः
एवं विन्यस्य मेधावी शुद्धकायो दृढव्रतः जपेत्पञ्चाक्षरं मन्त्रं लब्ध्वाचार्यप्रसादतः
evaṃ vinyasya medhāvī śuddhakāyo dṛḍhavrataḥ japetpañcākṣaraṃ mantraṃ labdhvācāryaprasādataḥ
Having thus performed nyāsa, the discerning practitioner—purified in body and steadfast in vow—should repeat in japa the five-syllabled mantra, having received it through the grace and authorization of the ācārya. Thus the paśu approaches Pati (Śiva) by a mantra empowered through right transmission.
Suta Goswami (narrating the Shaiva observance as taught in the Linga Purana tradition)
It makes mantra-japa (especially the pañcākṣara) a core limb of Linga worship, but only after nyāsa and bodily purification, emphasizing disciplined upāsanā rather than mere external offering.
Śiva is implied as Pati—the Lord approached through an empowered mantra. The verse stresses that access to Shiva-tattva is mediated by śuddhi (purification), vrata (steadfast discipline), and proper guru-sanction, which removes pasha (bondage) from the paśu.
Nyāsa followed by pañcākṣara-mantra japa received through ācārya-prasāda (authorized transmission/dīkṣā), aligning with Shaiva/Pāśupata sādhanā where mantra becomes effective through correct method and lineage.