asau vāva loko gautamāgniḥ | tasyāditya eva samit | raśmayo dhūmaḥ | ahar arciḥ | candramā aṅgārāḥ | nakṣatrāṇi visphuliṅgāḥ
'The altar (on which the sacrifice is supposed to be offered) is that world (heaven), O Gautama; its fuel is the sun itself, the smoke his rays, the light the day, the coals the moon, the sparks the stars.