Shiva Purana
तदाज्ञया ततः शिष्यो वेदान्तार्थानुसारतः ॥ शिवज्ञानपरो भूयात्सगुणागुणभेदतः ॥ ९०॥
At his bidding the disciple shall pursue Śaivitc knowledge in conformity with the Upaniṣadic doctrine and based on the difference of Saguṇa and Nirguṇa.
english translation
tadAjJayA tataH ziSyo vedAntArthAnusArataH ॥ zivajJAnaparo bhUyAtsaguNAguNabhedataH ॥ 90॥
hk transliteration by Sanscript