As per legend, the three azhwars were once were confined in a small dark enclosure during a rain in Thirukovilur and they experienced a fourth individual among them. They found out that it was god Vishnu and Poigai wished to see his face continuously but could view only from the simmering light of the lightning. With a view to maintain the continuity of light, he instantly composed hundred songs wishing light to emerge. The other two continued composing hundred songs each on Vishnu.