Shiva Purana
एते च मुनयस्सर्वे शिवपूजाकरा मताः॥ तथा पराशरो व्यासश्शिवपूजारतस्सदा ॥ १२॥
All these sages are considered to be worshipers of Lord Siva Similarly Parasara Vyasa was always engaged in the worship of Lord Shiva.
english translation
ete ca munayassarve zivapUjAkarA matAH॥ tathA parAzaro vyAsazzivapUjAratassadA ॥ 12॥
hk transliteration by Sanscript