Adhyaya 34: भस्ममहात्म्यं—अग्नीषोमात्मक-शिवतत्त्वं तथा पाशुपतव्रतप्रशंसा
कृतमेतद्वहत्यग्निर् भूयो लोकसमाश्रयात् असकृत्त्वग्निना दग्धं जगत् स्थावरजङ्गमम्
kṛtametadvahatyagnir bhūyo lokasamāśrayāt asakṛttvagninā dagdhaṃ jagat sthāvarajaṅgamam
Having accomplished that act, Agni blazes forth again, taking refuge in the worlds; and repeatedly, by that very fire, the entire universe—both the immovable and the moving—is burned up. In this cyclic burning, the pashu-bound cosmos is withdrawn by Kāla’s flame under the sovereignty of Pati, Śiva.
Suta Goswami (narrating to the sages of Naimisharanya)
It frames the cosmos as cyclic and perishable—burned again and again—so Linga worship turns the devotee from transient lokas toward the imperishable Pati (Śiva) represented by the Linga.
Though Agni is named, the teaching aligns with Shiva-tattva as the supreme governor of time and dissolution: the world of pashus and pashas is periodically withdrawn under the higher sovereignty of Pati.
A Pāśupata-oriented takeaway is vairāgya (dispassion): contemplating repeated cosmic burning supports inner renunciation, steadiness in japa/dhyāna on Śiva, and non-attachment to worldly supports (loka-āśraya).