Narayana Sūkta.09

tasya madhyē mahānagniḥ viśvārciḥ viśvatō mukhaḥ। sō'gravibhajaṁtiṣṭhan āhāraṁ ajaraḥ kaviḥ॥

In its centre is the great fire, the light of the universe, the face of the universe. Standing there, He, the undecaying wise one, partakes the primary share of the food.