Bhagavad Gita 3.32
But they who ridicule My word and do not observe it, are ignorant, devoid of wisdom, and blind. They seek only their own destruction.
ये त्वेतदभ्यसूयन्तो नानुतिष्ठन्ति मे मतम्।
सर्वज्ञानविमूढांस्तान्विद्धि नष्टानचेतसः॥ye tvetadabhyasūyanto nānutiṣṭhanti me matam|
sarvajñānavimūḍhāṃstānviddhi naṣṭānacetasaḥ||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).