By taking the word of Lord Vishnu, Lord Kumara Swamy used his Aagneyaastra (weapon of fire) to break the Shiva Lingam worn by Taraka. The Lingam broke into five pieces and was trying to unite by making Omkara nada (chanting Om). Then Surya Deva by the order of Lord Vishnu, fixed the pieces and worshipped them by building temples over them. By the formation of temples, the pieces stopped their movement and became famous as Panchaarama Kshetras. All the five Shiva Lingams in these five places have scale-like marks on them which are believed to have formed by the power of Aagneyaastra used by Lord Kumara Swamy.