Valli Malai, Tamil Nadu, home of Pongi Amman, a.k.a Valli Amman

Valli and Devasena

Maha Visnu's daughters were Sundaravalli and Amirtavalli. They both wanted to have a husband who will never get angry. They performed penance and Lord Muruga appeared before them. Both of them wanted to marry him. He said that Amirtavalli would be born as Tevayanai the daughter of Indra and Sundaravalli would be born to Veddas as Valli and then he would marry them both.

Sundaravalli and Amirtavalli pray to their father Visnu for the boon of marrying Lord Murugan
Lord Murugan promises to Sundaravalli and Amirtavalli that in their next life they will both marry him
Sundaravalli and Amirtavalli pray to their father Visnu for the boon of marrying Lord Murugan.
Lord Murugan promises to Sundaravalli and Amirtavalli that in their next life they will both marry him.

During the annual ten-day Valli Malai festival, after the Valli Tirumanam, all sumangalis married women with living husband are offered mangal sutra, kumkuma red vermilion and turmeric powder presented by Tiruppukazh Asramam.