। ॥ ५ ॥
In plain words
The one Parātman, the supreme Self: the seed the whole world grows from, first of everything, wanting nothing, without shape, known through Oṃ. The universe rises out of him, is held up by him, and sinks back into him. That Lord I worship.
Close to the Sanskrit
The one Parātman, the supreme Self, the seed of the world, the primordial, the desireless, the formless, the one to be known through Oṃ — from whom the universe is born, by whom it is sustained — that Lord I worship, in whom the universe dissolves.