As per Hindu legend, Vishnu appeared to the muthalam azhwars (first three azhwars) at Thirukkoilur. It was day time, but it darkened and started raining heavily. The wandering Poigai found out a small hide out, which has a space for one person to lie down. Bhoothath arrived there looking for a hiding place and Poigai accommodated him, with both sitting together. In the meanwhile, Pey also came to the same place as all the three preferred to stand because of lack of space. The darkness became dense and inside the small room, they were not able to see each other. In the meanwhile, they felt a fourth person also forced his way among them. The three azhwars realised from the light of the lightning that the fourth one had a charming face that was sublime and divine. The trio could immediately realize that it was Vishnu who was huddling among them. Poigai wished to see Vishnu's 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 the earth to be a big pot full of ghee like an ocean where the Sun could be the burning wick.