उमामहेश्वरव्रतं—पञ्चाक्षरमन्त्रस्य माहात्म्यं, न्यासः, जपविधिः, सदाचारः, विनियोगः
गुरुस्तुष्टो दहत्येवं पापं तन्मन्त्रतेजसा ब्रह्मा हरिस् तथा रुद्रो देवाश् च मुनयस् तथा
gurustuṣṭo dahatyevaṃ pāpaṃ tanmantratejasā brahmā haris tathā rudro devāś ca munayas tathā
When the Guru is pleased, he thus burns away sin by the fiery power of that mantra. In the same way, Brahmā, Hari (Viṣṇu), Rudra, the gods, and the sages act through mantra and grace.
Suta Goswami (narrating the doctrine of mantra and Guru’s grace within the Linga Purana discourse)
It grounds Linga-pūjā in Guru-kr̥pā and mantra-tejas: when the preceptor is pleased and the mantra is rightly received, pāpa is burned, making worship spiritually effective and purifying the pashu (bound soul).
By placing Rudra alongside cosmic authorities, it implies that purification and uplift occur through divine agency expressed as mantra and grace—Shiva as Pati empowers the mantra that cuts pasha (bondage) and restores the soul toward liberation.
Mantra-dīkṣā and disciplined japa under a satisfied Guru—central to Pāśupata-oriented sādhana—where mantra’s tejas is the purificatory force that consumes accumulated demerit.