Shiva Purana
ते रूपे परमेशस्य तदिच्छायाः प्रवर्तनात् ॥ तयोः कारणभावेन शिवं परमकारणम् ॥ १४ ॥
They are the forms of the lord because they function at his will. Since he is their cause, those who know the meaning of the ‘cause’ say that Śiva the great cause is the cause of both the universal and the individual.
english translation
te rUpe paramezasya tadicchAyAH pravartanAt ॥ tayoH kAraNabhAvena zivaM paramakAraNam ॥ 14 ॥
hk transliteration by Sanscript