Bhagavad Gita 18.29
बुद्धिर्भेदं धृतेशैव गुणतस्त्रिविधं शृणु |
प्रोच्यमानमशेषेण पृथकत्वेन धनञ्जय
Translation
Hear now, O Arjun, of the distinctions of intellect and determination, according to the three modes of material nature, as I describe them in detail.