Propitious Lord MARAGADHESWARAR and Goddess MARAGADHAAMBIKA
Among the gurus, Swamigal thought he must first install Meda Dakshinamoorty. In his explorations he undertook travel to different Siva abodes. At one abode he was quite unexpectedly invited to consecrate a Siva idol on a Sivaratri day. He was gifted with a precious green stone (maragadam) lingam, a unique piece, as the grains on its surface had natural impressions resembling the Himalayan range.
The mineral maragadham has vibrations that tackle different diseases (sarvaroga nivaranam). The gift indicated that he needed to install the 468 siddhars in the form of lingams, at arogya peedam. He invited the pontiff to visit Walajapet. When the pontiff came, Swamigal placed an order with his source to sculpt the 468 lingams since his place was famous for Shiva lingams. This Maragadha lingam has travelled to Koormam in Andhra Pradesh. Many devotees have invited the lingam to their homes and performed the Sri Rudra Homam.
This lingam is seated on a nandhi pedestal, quite unusual as the Nandhi is always in front of the lingam. (Nandhi is the bull which Siva uses as his vehicle in Indian lore, lingam is the term used for Shiva depicted in an elliptical form on a circular pedestal with a nozzle on the side).
Two special homams are offered here for those seeking marriage - the swayamvara kala parvathi homam for girls, and the gandharva kala parvatha homam for men.