Niruthi Lingam has South West as its direction and is associated with the nodal planet Rahu. Niruthi is the king of Asuras (demons) and has a dog as his vehicle. He is believed to rule the southern realm along with Lord Yama, the god of death. According to legends, king Nala took bath in the Niruthi Lingam Theertham (holy tank) for relief from his sins. It is believed that this Lingam can protect people from the ill effects of black magic and other negativities. Worshipping Niruthi Lingam can bestow you with good health, wealth and fame and progeny blessing. This Lingam is also believed to help the devotees attain detachment from the worldly desires.