उमामहेश्वरव्रतं—पञ्चाक्षरमन्त्रस्य माहात्म्यं, न्यासः, जपविधिः, सदाचारः, विनियोगः
अस्नात्वा न च भुञ्जीयाद् अजपो ऽग्निमपूज्य च पर्णपृष्ठे न भुञ्जीयाद् रात्रौ दीपं विना तथा
asnātvā na ca bhuñjīyād ajapo 'gnimapūjya ca parṇapṛṣṭhe na bhuñjīyād rātrau dīpaṃ vinā tathā
Man soll nicht essen, ohne gebadet zu haben; auch nicht ohne Japa und ohne zuvor das heilige Feuer (Agni) zu ehren. Man soll nicht auf einem Blattteller essen; und nachts ebenso nicht ohne Lampe. Dies sind die Zuchtregeln rechten Wandels.
Suta Goswami (narrating Shaiva dharma instructions to the sages of Naimisharanya)
It frames eating as an extension of pūjā-discipline: bodily purity (snāna), mantra-remembrance (japa), and honoring Agni support a sattvic state suitable for Shiva-bhakti and Linga-sevā.
Indirectly, it points to Shiva as Pati—the Lord accessed through inner remembrance and outer order: japa aligns the pashu (soul) toward Shiva, while disciplined conduct reduces pasha (bondage) born of negligence and tamas.
Daily niyamas linked with Pashupata-leaning practice: snāna (śauca), japa (mantra-yoga), and Agni-upacāra before meals; also the rule of taking food with proper light at night.