Chandogya Upanishad
Prapathaka III, Khanda 8
On the third of these nectars the Âdityas live, with Varuna at their head. True, the Devas do not eat or drink, but they enjoy by seeing the nectar.
He who thus knows this nectar, becomes one of the Âdityas, with Varuna at their head, he sees the nectar and rejoices. And he, having entered that colour, rises again from that colour.