Chandogya Upanishad
Prapathaka III, Khanda 10
On the fifth of these nectars the Sâdhyas live, with Brahman 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 Sâdhyas, with Brahman at their head; he sees the nectar and rejoices. And he, having entered that colour, rises again from that colour.