ஒருவனா முன்னை யொளித்தெவர் வருவாருன்சூதே யிது வருணாசலா
ஒருவனாம் உன்னை ஒளித்து எவர் வருவார் உன் சூதே இது அருணாசலா
In plain words
Wait. You are the only one there is. So who exactly broke in? Who could have got past you, when there is no one who is not you? There were no thieves. There was you, playing.
Word for word
You are the One — who could come hidden from you? This is your own game. O Arunachala!