Soundarya Lahari was composed by Adi Shankara atop the Gopadari Hill , after accepting the fact that the union of Sri Shiva and Devi Shakti , as in Shaktism , transpired into the Shakti-Shri Chakra , the symbol of Devi ( Goddess ) , as Sri Yantra , as mentioned in ' Shankara Digvijay ' - Life history of Shankaracharya , and only when Shiva is united with Shakti does he have the power to create .