उमामहेश्वरव्रतं—पञ्चाक्षरमन्त्रस्य माहात्म्यं, न्यासः, जपविधिः, सदाचारः, विनियोगः
जपान्यनियमाश्चैव नात्र कार्या विचारणा गुरोर्विरुद्धं यद्वाक्यं न वदेत्सर्वयत्नतः
japānyaniyamāścaiva nātra kāryā vicāraṇā gurorviruddhaṃ yadvākyaṃ na vadetsarvayatnataḥ
ジャパの規律(ニヤマ)については、ここでこれ以上論ずる必要はない。あらゆる努力をもって、師(グル)に背く言葉を決して口にしてはならない。
Suta Goswami (narrating the traditional Shaiva discipline as taught in the Linga Purana’s guru-centered instruction)
It establishes that effective japa and Linga-upāsanā depend on guru-śāsana: the sādhaka’s speech and conduct must not oppose the Guru, because the Guru transmits the right mantra-vidhi and bhāva necessary for Shiva’s grace.
Indirectly, it points to Shiva-tattva as accessed through proper transmission and discipline: the Guru functions as the visible guide to Pati (Shiva), leading the bound pashu away from pasha through correct japa and right conduct.
Mantra-japa with niyama is highlighted, especially the yogic restraint of speech (vāk-samyama): one must avoid guru-viruddha speech to keep the practice aligned with Pashupata discipline.