Charak Samhita
करणानि मनो बुद्धिर्बुद्धिकर्मेन्द्रियाणि च। कर्तुः संयोगजं कर्म वेदना बुद्धिरेव च ॥५६॥
The instruments of knowledge are mind, intellect and cognitive and conative organs. Their association with the doer (Purusha) results in action, sensation and understanding.
english translation
karaNAni mano buddhirbuddhikarmendriyANi ca। kartuH saMyogajaM karma vedanA buddhireva ca ॥56॥
hk transliteration by Sanscript