Chandogya Upanishad 3.10

atha yat pañcamam amṛtaṃ tat sādhyā upajīvanti brahmaṇā mukhena na vai devā aśnanti na pibanti etad evāmṛtaṃ dṛṣṭvā tṛpyanti

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.

ta etad eva rūpam abhisaṃviśanti etasmād rūpād udyanti

They enter into that colour, and they rise from that colour.

sa ya etad evam amṛtaṃ veda sādhyānām evaiko bhūtvā brahmaṇaiva mukhenaitad evāmṛtaṃ dṛṣṭvā tṛpyati sa etad eva rūpam abhisaṃviśati etasmād rūpād udeti

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.

sa yāvad āditya uttarata udetā dakṣiṇato 'stam etā dvis tāvad ūrdhvam udetārvāg astam etā sādhyānām eva tāvad ādhipatyaṃ svārājyaṃ paryetā

So long as the sun rises in the north and sets in the south, twice as long does it rise above, and set below; and so long does he follow the sovereign power of the Sâdhyas.