उमामहेश्वरव्रतं—पञ्चाक्षरमन्त्रस्य माहात्म्यं, न्यासः, जपविधिः, सदाचारः, विनियोगः
छन्दो देवी च गायत्री परमात्माधिदेवता उदात्तः प्रथमस्तद्वच् चतुर्थश् च द्वितीयकः
chando devī ca gāyatrī paramātmādhidevatā udāttaḥ prathamastadvac caturthaś ca dvitīyakaḥ
छन्दोदेवी च गायत्री, परमात्मा अधिदेवता। उदात्तः प्रथमः; तथैव चतुर्थः; द्वितीयकश्च यथाविधि॥
Suta
It grounds Shiva-oriented japa and stotra recitation in Vedic discipline: correct chandas (Gāyatrī) and proper svara (Udātta etc.) make the mantra efficacious for Linga-pūjā.
By naming the Paramātman as the adhidevatā, it points to Shiva as Pati—the supreme consciousness presiding over mantra, beyond the pashu (individual soul) and its pasha (bondage).
Mantra-sādhana with attention to chandas and Vedic accents—an essential discipline supporting Pāśupata-oriented purification and focused japa in Shiva-pūjā.