Narayana Sūkta.09

तस्य मध्ये महानग्निः विश्वार्चिः विश्वतो मुखः। सोऽग्रविभजंतिष्ठन् आहारं अजरः कविः॥

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.