Rik and Sâman are his joints, and therefore he is udgîtha. And therefore he who praises him (the ut) is called the Ud-gâtri (the out-singer). He (the golden person, called ut) is lord of the worlds beyond that (sun), and of all the wishes of the Devas (inhabiting those worlds). So much with reference to the Devas.

In plain words: The verse and the song are like the golden person's joints, so he is the sacred chant itself, and the priest who sings it is named after him. He rules the worlds above the sun and grants the wishes of the gods who live there.