Gargya said: 'The person that is in the water (in seed, and in the heart), that I adore as Brahman.' Agatasatru said to him: 'No, no! Do not speak to me on this. I adore him as likeness.' Whoso adores him thus, to him comes what is likely (or proper), not what is improper; what is born from him, is like unto him.

In plain words: Gargya said he worships the person in water as Brahman. The king said he already honors that one as likeness, and whoever does so receives what is right and fitting, and his children are like him.