The ascetics meditate upon thee, the priests offer sacrifice to thee. Thou, identical with progenitors and celestials, receivest burnt-offerings and oblations. The universe is a huge manifestation of thine; the world is lesser than that, O lord; and lesser than that are all the subtile elements and elementary being and thy subtlest form is the subtile principle within them that is called soul.
In plain words: Prahlada says monks meditate on Vishnu and priests offer sacrifices to him. The whole universe is his largest form. His smallest, most hidden form is the soul inside every being.