The concept of mangalasasanam is often associated with the
pasurams (verses) of the
Alvars, who during the early medieval period of
Tamil history (between the 7th and 10th centuries CE), worshipped
Vishnu and his
avatars through their hymns. This collection of their hymns is known as the
Naalayira Divya Prabhandham. The
Sri Vaishnava shrines that were extolled by the Alvars are called the
Divya Desams, where a number of these poet-saints offered their mangalasasanam. ==Classification==