Chapter 3 · verse 32 · gita.yoga.org

Bhagavad Gita 3.32

ये त्वेतदभ्यसूयन्तो नानुतिष्ठन्ति मे मतम्। सर्वज्ञानविमूढांस्तान्विद्धि नष्टानचेतसः

But those who criticize My teaching and do not practice it, deprived of all knowledge and lacking discernment, know them to be doomed to destruction.