Shiva Purana
ज्ञानशक्तिस्तु तत्कार्यं करणं कारणं तथा ॥ प्रयोजनं च तत्त्वेन बुद्धिरूपाध्यवस्यति ॥ ३३ ॥
Śakti of knowledge is in the form of Buddhi and it determines its effect, instrument, cause and purpose factually.
english translation
jJAnazaktistu tatkAryaM karaNaM kAraNaM tathA ॥ prayojanaM ca tattvena buddhirUpAdhyavasyati ॥ 33 ॥
hk transliteration by Sanscript