Regarding the sources, literary evidence vies with inscriptional testimony and establishes that it
played a spectacular part in the past. Scriptures embody a great corpus.
Puranas like Vaman Purana, Brahmanda Purana, Epics
like Mahabaratam, devotional literature of Alwars and Nayanmars pour out in torrents, if tapped at
right places. To add to this, the inscriptions on the temple walls bear eloquent testimony to the
patronage of kings with dates. The travelers account also help to reconstruct the history of this
temple with commendable exactitude.