Shiva Purana
इतीदृशं पुण्यप्रश्नं पृष्टवान्मुनिसत्तमः ॥ व्यासस्सनत्कुमारं वै शैवं सच्चरितं जगौ ॥ ५ ॥
This same holy question was put by the excellent sage Vyāsa to Sanatkumāra who narrated the story of Siva.
english translation
itIdRzaM puNyapraznaM pRSTavAnmunisattamaH ॥ vyAsassanatkumAraM vai zaivaM saccaritaM jagau ॥ 5 ॥
hk transliteration by Sanscript