Shiva Purana

siva.sh/siva-purana/kotirudra-samhita/18/4

कस्मिंश्चित्समये चाञ नारदो भगवान्मुनिः।। गोकर्णाख्यं शिवं गत्वा सिषेवे परभक्तिमान्।। ४।।

sanskrit

Once, the holy sage Nārada served with great devotion the phallic form of Śiva named Gokarṇa after going there.

english translation

kasmiMzcitsamaye cAJa nArado bhagavAnmuniH|| gokarNAkhyaM zivaM gatvA siSeve parabhaktimAn|| 4||

hk transliteration by Sanscript