उमामहेश्वरव्रतं—पञ्चाक्षरमन्त्रस्य माहात्म्यं, न्यासः, जपविधिः, सदाचारः, विनियोगः
अपवित्रकरो ऽशुद्धः प्रलपन्न जपेत् क्वचित् क्रोधो मदः क्षुधा तन्द्रा निष्ठीवनविजृम्भणे
apavitrakaro 'śuddhaḥ pralapanna japet kvacit krodho madaḥ kṣudhā tandrā niṣṭhīvanavijṛmbhaṇe
手が不浄、身が清くない、無駄話、怒り、酔い、空腹、眠気、唾吐き、あくびの状態では、ジャパ(念誦)をしてはならない。
Suta Goswami (narrating Purāṇic injunctions on Shiva-mantra discipline to the sages of Naimiṣāraṇya)
It sets the śauca (purity) and niyama (discipline) required for Shiva-mantra practice during Liṅga-pūjā, teaching that external and internal impurity obstructs the devotee’s approach to Pati (Shiva).
By insisting on purity and steadiness for japa, it implies Shiva-tattva as supremely pure (śuddha) and approached through a purified instrument—body, speech, and mind—so the pashu (soul) can loosen pasha (bondage) and align with Pati.
Mantra-japa as a Pāśupata-aligned discipline: restraining agitation (anger), tamas (drowsiness), and bodily distractions (spitting/yawning), and maintaining cleanliness before chanting Shiva’s mantras.