उमामहेश्वरव्रतं—पञ्चाक्षरमन्त्रस्य माहात्म्यं, न्यासः, जपविधिः, सदाचारः, विनियोगः
ज्ञात्वा प्रयोगं विधिना च सिद्धिं लब्ध्वा तथा पञ्चमुखो महात्मा प्रोवाच पुत्रेषु जगद्धिताय मन्त्रं महार्थं किल पञ्चवर्णम्
jñātvā prayogaṃ vidhinā ca siddhiṃ labdhvā tathā pañcamukho mahātmā provāca putreṣu jagaddhitāya mantraṃ mahārthaṃ kila pañcavarṇam
規定にかなう正しい行法を知り、かくして成就(シッディ)を得た大霊なる五面の主は、世の利益のために、深遠な大義を宿す五音のマントラを子らに説き示した。
Suta Goswami (narrating the Purana; reporting Shiva’s act of instruction)
It grounds Linga-pūjā in mantra-prayoga: Śiva’s five-syllabled mantra is presented as a world-benefiting transmission whose correct method (vidhi) leads to siddhi, making worship effective rather than merely symbolic.
Śiva appears as Pañcamukha—the all-knowing Pati—who possesses perfected mastery of means (upāya) and compassionately teaches for jagad-hita, indicating his role as liberator of the paśu from pāśa through mantra and grace.
Mantra-dīkṣā and disciplined mantra-prayoga are implied: knowing the correct injunctions, applying them, and attaining siddhi—an approach aligned with Pāśupata-oriented sādhanā centered on the pañcākṣarī (namaḥ śivāya).