हस्व॑ दीर्घ कृशं स्थूलं चतुरस््र तु वृत्तवत् । एवं द्वादशविस्तारं तेजसो रूपमुच्यते
hrasvaṁ dīrghaṁ kṛśaṁ sthūlaṁ caturasraṁ tu vṛttavat | evaṁ dvādaśa-vistāraṁ tejaso rūpam ucyate ||
Vāyu said: “The form of radiant energy is described as having twelve modes of extension: it may appear short or long, thin or thick, square or else rounded. Thus, by these varied dimensions and shapes, the nature of ‘tejas’ is spoken of.”
वायुदेव उवाच
The verse teaches that ‘tejas’ (radiant/fire-like energy) is not confined to a single visible shape; it is understood through multiple modes of extension—contrasting dimensions (short/long, thin/thick) and geometries (square/round)—indicating a many-sided, descriptive approach to subtle principles.
Vāyu is speaking in an explanatory, instructional passage, defining how the form of ‘tejas’ is characterized. The focus is not on action but on doctrinal description—classifying the appearances or dimensions by which tejas is recognized.