Verse 5.4.1

इति तृतीयः खण्डः ॥
असौ वाव लोको गौतमाग्निस्तस्यादित्य एव समिद्रश्मयो धूमोऽहरर्चिश्चन्द्रमा अङ्गारा नक्षत्राणि विस्फुलिङ्गाः ॥ ५.४.१ ॥

iti tṛtīyaḥ khaṇḍaḥ ||
asau vāva loko gautamāgnistasyāditya eva samidraśmayo dhūmo'hararciścandramā aṅgārā nakṣatrāṇi visphuliṅgāḥ || 5.4.1 ||

1. O Gautama, heaven is the [sacrificial] fire; the sun is its fuel; the rays are the smoke; day is the flame; the moon is the embers; and the stars are the sparks.

Word-for-word explanation:

Gautama, O Gautama; asau vāva lokaḥ agniḥ, that world there [i.e., heaven] is the fire; ādityaḥ eva tasya samit, the sun is its fuel; raśmayaḥ dhūmaḥ, the rays are the smoke; ahaḥ arciḥ, the day is the flame; candramāḥ aṅgārāḥ, the moon is the embers; nakṣatrāṇi visphuliṅgāḥ, the stars are the sparks.

Commentary:

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