Shiva Purana
ततस्तुष्टाव तं व्यासः कालेयस्स मुनीश्वरः॥ सनत्कुमारं मुनयः सुरविज्ञानसागरम्॥ २७॥
O sages, then the great sage Vyāsa, eulogised Sanatkumāra, the ocean of the perfect knowledge of the deities.
english translation
tatastuSTAva taM vyAsaH kAleyassa munIzvaraH॥ sanatkumAraM munayaH suravijJAnasAgaram॥ 27॥
hk transliteration by Sanscript