In plain words
The world is within him, like a city seen in a mirror, yet through ignorance he sees it spread outside, as a sleeper sees a dream. When knowledge dawns he sees himself directly, one alone. Homage to that Dakshinamurti, the foremost Guru. Tamil explanatory prose: The world is within oneself, like a town seen in a mirror, yet through one’s own ignorance it is seen as outside, as a dream is seen in sleep. As one who wakes finds only himself, so on knowing himself he sees that he alone exists. Salutation to that Dakshinamurti, the first Guru.
Word for word
He sees the world, existing within himself like a city in a mirror, appear outside through ignorance, as in a dream during sleep. At the dawning of knowledge, He directly sees himself as one alone. Homage to that Dakshinamurti, the foremost Guru.