उमामहेश्वरव्रतं—पञ्चाक्षरमन्त्रस्य माहात्म्यं, न्यासः, जपविधिः, सदाचारः, विनियोगः
न्यस्यते यत्तदुत्पत्तिर् विपरीतं तु संहृतिः अङ्गुष्ठादिकनिष्ठान्तं न्यस्यते हस्तयोर् द्वयोः
nyasyate yattadutpattir viparītaṃ tu saṃhṛtiḥ aṅguṣṭhādikaniṣṭhāntaṃ nyasyate hastayor dvayoḥ
न्यस्यते यत्तदुत्पत्तिर्विपरीतं तु संहृतिः । अङ्गुष्ठादिकनिष्ठान्तं न्यस्यते हस्तयोर्द्वयोः ॥
Suta Goswami (narrating Linga-puja and nyasa procedure to the sages of Naimisharanya)
It defines how kara-nyāsa (hand-nyāsa) encodes Shiva’s cosmic functions: forward placement mirrors creation (utpatti) and reverse placement mirrors dissolution (saṃhṛti), making the worshipper’s hands fit instruments for Linga-puja.
Shiva-tattva is implied as Pati, the Lord who manifests and withdraws the cosmos; nyāsa ritually aligns the practitioner with these powers, pointing to Shiva as both the source and the reabsorbing ground of all tattvas.
Kara-nyāsa: installing mantra-power on the fingers of both hands, in forward or reverse order, as a preparatory discipline for japa and Linga-puja—an internalizing step consistent with Pāśupata-oriented ritual yoga.