उमामहेश्वरव्रतं—पञ्चाक्षरमन्त्रस्य माहात्म्यं, न्यासः, जपविधिः, सदाचारः, विनियोगः
हृदये गुह्यके चैव पादयोर्मूर्ध्नि वाचि वा कण्ठे चैव न्यसेदेव प्रणवादित्रिभेदतः
hṛdaye guhyake caiva pādayormūrdhni vāci vā kaṇṭhe caiva nyasedeva praṇavāditribhedataḥ
Debe realizar nyāsa colocando a la Deidad—según el triple modo que comienza con el Praṇava—en el corazón, en el lugar secreto, en los pies, en la coronilla, en la palabra (el habla) y también en la garganta.
Suta Goswami (narrating Shiva-oriented ritual teaching within the Linga Purana tradition)
It teaches inner Linga-worship through mantra-nyāsa: installing Shiva in key subtle-body centers so the external pūjā becomes grounded in direct Pati-awareness rather than mere outer offering.
Shiva is presented as immanent and installable as the indwelling Lord (Pati) across heart, speech, and vital centers—showing that Shiva-tattva pervades the pashu’s embodied field and can be realized through disciplined mantra.
Mantra-nyāsa beginning with Praṇava (Oṁ), applied in a threefold manner, aligning body and speech as instruments of Pashupata-style purification and concentration.