On the first of these nectars (the red light, which represents fame, glory of countenance, vigour, strength, health) the Vasus live, with Agni at their head. True, the Devas do not eat or drink, but they enjoy by seeing the nectar.

In plain words: The first nectar, the red light of the sun, feeds the Vasus, a group of gods led by Agni, the god of fire. The gods do not eat or drink; they are happy just by looking at the nectar.