उमामहेश्वरव्रतं—पञ्चाक्षरमन्त्रस्य माहात्म्यं, न्यासः, जपविधिः, सदाचारः, विनियोगः
तस्माच्छतगुणोपांशुः सहस्रो मानसः स्मृतः यद् उच्चनीचस्वरितैः शब्दैः स्पष्टपदाक्षरैः
tasmācchataguṇopāṃśuḥ sahasro mānasaḥ smṛtaḥ yad uccanīcasvaritaiḥ śabdaiḥ spaṣṭapadākṣaraiḥ
तस्माच्छतगुणोपांशुः सहस्रो मानसः स्मृतः । यदुच्चनीचस्वरितैः शब्दैः स्पष्टपदाक्षरैः ॥
Suta Goswami (narrating the teaching on japa within the Linga Purana discourse)
It prioritizes inner worship (antar-yāga) during Linga-pūjā: moving from audible recitation to whispered and finally mental japa, which is taught as far more fruitful for pleasing Pati (Shiva) and purifying the pashu (individual soul).
By valuing mānasa-japa most, it implies Shiva is approached most directly through inward, subtle awareness—beyond gross sound—supporting the Shaiva Siddhānta emphasis that Pati is realized when the mind becomes purified and one-pointed, loosening pasha (bondage).
A graded discipline of japa—vācika (audible), upāṁśu (whispered), and mānasa (mental)—with the yogic takeaway that mental repetition is the most potent for dhyāna, mantra-siddhi, and Pashupata-oriented inner restraint.