Shiva Purana
तनुं कृत्वात्मनः शैवीं शिवशास्त्रोक्तवर्त्मना ॥ संपूज्य देवदेवेशं नकुलीश्वरमीश्वरम् ॥ १४ ॥
Having assumed the form of Lord Śiva, he followed the path prescribed in the scriptures of Lord Śiva. Having worshiped lord of the gods and goddesses lord of Nakuli.
english translation
tanuM kRtvAtmanaH zaivIM zivazAstroktavartmanA ॥ saMpUjya devadevezaM nakulIzvaramIzvaram ॥ 14 ॥
hk transliteration by Sanscript