Here is a writeup of Stalapuranam about Thiru Sempon Sei Koil, one among divya desams in Thirunangur , written by Sri U.Ve.Vidwan Egai VedantaDesika Thatacharya Swami.
Located under ½ km East of Purushottamar Divya Desam is Sempon Sei Arangar Divya Desam in Thirunangur. Sempon Arangar is said to have come from Uraiyur. Hence the Lord here has 2 Goddesses similar to Azhagiya Manavaalan of Uraiyur.
After killing Raavana, Lord Raama is said to have stayed here for a few days. While here, he is said to have a made a golden cow and given it to a Brahmin, who is said to have built this temple.
It is believed that a poor person came here and uttered the Thiru Manthiram repeatedly for a few days. Answering his prayers, the lord here is said to have given him wealth and made him happy. The belief here is that if one would recover his lost wealth, if one offers sincere prayers to Sempon Arangan.
Deity : Perarulaalan East Facing Standing Posture
Goddess : Alli Maamalar Naachiyar
Utsavar : Sempon Arangar
Azhvaar : ThiruMangai Azhvaar 10 Paasurams (1268-77)
Temple Timing : 8am-12noon and 5pm-7pm
Priest : Ramani Deekshithar
Contact : 04364 256172