Yoga-kṛtya (योककृत्य) — Vyāsa on Sense-Restraint, Obstacles, and Brahman-Realization
वायोरपि विकुर्वाणाज्ज्योतिर्भवति भास्वरम् | रोचिष्णु जायते शुक्र तद्रूपगुणमुच्यते
vāyor api vikurvāṇāj jyotir bhavati bhāsvaram | rociṣṇu jāyate śukra tad-rūpa-guṇam ucyate ||
Vyāsa menerangkan urutan perubahan unsur: Bahkan dalam angin (vāyu) pun timbul suatu perubahan, dan daripadanya lahir api yang bersinar sebagai cahaya (agni/tejas). Unsur api itu berkilau dan gemilang; sifat khasnya dikatakan “rupa/yang dapat dilihat” (rūpa).
व्यास उवाच
The verse teaches a cosmological-philosophical sequence: from the modification of the air element arises the luminous fire principle, whose defining property is rūpa—visibility/form—i.e., the basis of perception by sight.
In the didactic setting of Śānti Parva, Vyāsa is explaining the nature and emergence of the elements and their characteristic qualities, moving from vāyu (air) to jyotis/agni (fire/light) and identifying fire’s specific guṇa as rūpa.