Shiva Purana — Vayaviya Samhita, Shloka 40
पशुपाशपतिज्ञान-प्राप्तिः
Acquisition of Paśupati–Pāśa Knowledge
यथा घटादिकं कार्यं मृदादेर्नातिभिद्यते । शरीरादि तथा व्यक्तमव्यक्तान्नातिभिद्यते
yathā ghaṭādikaṃ kāryaṃ mṛdādernātibhidyate | śarīrādi tathā vyaktamavyaktānnātibhidyate
正如罐等诸果并不真实地离开泥土等（其物质因），同样，显现者——以身为始——亦不真实地离开不显（avyakta）。
Suta Goswami (narrating the Vāyavīya teaching to the sages at Naimisharanya)
Tattva Level: pasha
Shiva Form: Dakṣiṇāmūrti
FAQs
It teaches non-separation between the manifest world and its unmanifest ground, guiding the seeker to see effects as dependent on their cause and to turn inward toward the subtle source—ultimately pointing to Shiva as the supreme basis of all manifestation.
Linga worship trains the mind to perceive the visible symbol (saguna upāsanā) as inseparable from the formless source (nirguṇa ground). As the pot is not other than clay, the worshipped form is a doorway to the unmanifest reality of Shiva.
Meditate on cause-and-effect non-separation during japa of “Om Namaḥ Śivāya,” contemplating that body and world arise from the unmanifest and subside back into it; this supports detachment and steadiness in yoga and bhakti.