Shiva Purana
तस्मात्त्रयस्ते कथ्यंते जगतः कारणानि च ॥ कारणत्रयहेतुश्च शिवः परमकारणम् ॥ ५० ॥
Therefore I shall now describe the three causes of the universe. Shiva is the cause of the three causes and the supreme cause.
english translation
tasmAttrayaste kathyaMte jagataH kAraNAni ca ॥ kAraNatrayahetuzca zivaH paramakAraNam ॥ 50 ॥
hk transliteration by Sanscript