उमामहेश्वरव्रतं—पञ्चाक्षरमन्त्रस्य माहात्म्यं, न्यासः, जपविधिः, सदाचारः, विनियोगः
अङ्गन्यासं न्यसेत्पश्चाद् एष साधारणो विधिः ओङ्कारं संपुटीकृत्य सर्वाङ्गेषु च विन्यसेत्
aṅganyāsaṃ nyasetpaścād eṣa sādhāraṇo vidhiḥ oṅkāraṃ saṃpuṭīkṛtya sarvāṅgeṣu ca vinyaset
Después, debe realizarse el aṅga-nyāsa (colocación del poder del mantra en los miembros). Este es el procedimiento común y normativo. Sellando la práctica con la sílaba Oṃ como resguardo, colóquese luego en todos los miembros—para que el cuerpo sea un asiento santificado del mantra de Śiva.
Suta Goswami (narrating the Linga-puja vidhi to the sages of Naimisharanya)
It teaches the prerequisite inner consecration for Linga-puja: by aṅga-nyāsa and sealing with Oṃ, the sādhaka makes the body a fit vessel for Śiva-mantra before external offerings.
Śiva-tattva is approached here as mantra-presence (Pati) that can be installed within the embodied pashu; when the limbs are permeated by mantra, bondage (pāśa) is weakened through sanctified awareness.
Aṅga-nyāsa and mantra-vinyāsa, with Oṃ as a protective saṃpuṭa (seal), a core preparatory discipline aligned with Pāśupata-style mantra-sādhana and ritual purity.