sodhi urukkaattu Arunachala
Arunachala! Please do not deceive and cheat and test me by making me go through various forms of sorrow like you have done all this while, and reveal your natural form (swaroopam) to me.
If Arunachala, the source of the immeasurable illusory power, himself starts testing me (soodhu is deceit/deceitfulness and sodhanai is test/experiment, sorrow) how can I escape from that grip when even the great Brahma and Vishnu fell prey to it? So please don’t test me says Bhagavan. He is pleading with the lord who dissolves the triads (of the seer-seen-act of seeing, knower-known-knowledge etc called ‘triputis’) to help him from falling prey to the power and attraction of Maya. In a previous verse Bhagavan asked Arunachala to show his beauty (un azhagai kaattu), here he is asking Him to reveal His form of light (Arunachala appeared as a huge column of light to Vishnu and Brahma according to Puranas).
NOTE: Soodhu also means gambling, maybe because it implicitly hints at decei/cunningt, the word also means deceit/cheating.