प्रवृत्तिं च निवृत्तिं च कार्याकार्ये भयाभये। बन्धं मोक्षं च या वेत्ति बुद्धिः सा पार्थ सात्त्विकी॥
pravṛttiṃ ca nivṛttiṃ ca kāryākārye bhayābhaye bandhaṃ mokṣaṃ ca yā vetti buddhiḥ sā pārtha sāttvikī
Meaning
That intellect which understands the creation and dissolution of life, what actions should be done and what not, which discriminates between fear and fearlessness, bondage and deliverance, is Pure.
English translation by Shri Purohit Swami (1935), public domain. Sanskrit text in the public domain. About Duvidha