In plain words
At first this world lies in him without division, like a sprout within its seed. Afterwards, by his own power, he spreads it out picture upon picture, through the space, time and action that maya conjures, as a siddha or a magician unfolds a display. Homage to that Dakshinamurti, the Guru. Tamil explanatory prose: The world first rests in him without difference, like the sprout within a seed. Afterwards, by the power of his own will, he spreads it outward as a manifold marvel, through space, time and karma that maya makes falsely appear, as a siddha or a magician does. Salutation to that Guru Dakshinamurti.
Word for word
This world, formerly undifferentiated like a sprout within a seed, is afterwards unfolded by Him in many varied forms through space, time and action imagined through maya, by His power, like an accomplished adept or a magician. Homage to that Dakshinamurti, the Guru.