Gargya said: 'The person that is in the sun, that I adore as Brahman.' Agatasatru said to him: 'No, no! Do not speak to me on this. I adore him verily as the supreme, the head of all beings, the king. Whoso adores him thus, becomes Supreme, the head of all beings, a king.'

In plain words: Gargya said he worships the person in the sun as Brahman. The king stopped him: he already honors that one as the supreme ruler of all beings, and whoever does so becomes a supreme ruler too.