 The religious works of these saints in Tamil, songs of love and devotion, are compiled as "Nalayira Divya Prabandham" containing 4000 verses and the 108 temples revered in their songs are classified as "Divya desam".The saints had different origins and belonged to different castes.As per tradition, the first three "azhwars", Poigai, Bhutha and Pey were born miraculously.