Shiva Purana
द्विजेश्वरावतारस्ते वर्णितः परमो मया ॥ महेश्वरस्य भद्रायुपरमानन्ददः प्रभो ॥ ६९॥
Thus the great incarnation of lord Śiva as Dvijeśvara has been described by me. It was the bestower of great bliss on Bhadrāyu.
english translation
dvijezvarAvatAraste varNitaH paramo mayA ॥ mahezvarasya bhadrAyuparamAnandadaH prabho ॥ 69॥
hk transliteration by Sanscript