Shiva Purana
यतस्त्वेतौ विशुद्धौ तौ देहस्तदुपचारतः ॥ तदेव परमा शक्तिः शिवस्य परमात्मनः ॥ १५ ॥
Because these two bodies are pure, they are worshiped by the Supreme Personality of Godhead. That is the supreme power of Lord Shiva, the Supreme Soul.
english translation
yatastvetau vizuddhau tau dehastadupacArataH ॥ tadeva paramA zaktiH zivasya paramAtmanaH ॥ 15 ॥
hk transliteration by Sanscript