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                | Location | : | Nallur |  
                | Main Deity | : | Kalyana
                  Sundarar. |  |  |  
        
          | Nearest Town : Kumbakonam | District :  Thanjavur | State :  Tamil Nadu |  
        
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                |  The main deity is Kalyana Sundarar, Lord Shiva is 
believed to have granted Sage Agasthyar a vision of 
his marriage here. Behind the lingam are the images 
of Shiva and Parvati shown getting married, with 
Brahma performing the rites of marriage on the left, 
and Vishnu, giving away his sister Parvati in 
marriage, on the right. 
 The lingam itself is unique, 
for it is made of an unknown material and changes 
colours five times a day, and is thus also known as 
Panchavarneswarar. The lingam has 3 portions – the 
lower portion which joins the Avudaiyar, and is 
smooth, the middle portion, which is rough, and the 
top, which is again smooth, and is the most prominent 
part of the lingam.
 
 Each of these parts changes 
colour every two and half hours. 
Kunti the mother of the Pandavas bathed at the 
Saptasagara theertham and so there is an image of 
Kunti in the temple.
 
 Following are the five colors it changes in a day
 Copper colour
 Light Red (the colour of sunrise)
 Colour of molten gold
 Emerald green
 An indescribable colour
 Source : anushankarn.sulekha.com
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