Bhagavad Gita 14.8
But Ignorance, the product of darkness, stupefies the senses of all embodied beings, binding them with chains of folly, indolence, and lethargy.
तमस्त्वज्ञानजं विद्धि मोहनं सर्वदेहिनाम्।प्रमादालस्यनिद्राभिस्तन्निबध्नाति भारत॥tamastvajñānajaṃ viddhi mohanaṃ sarvadehinām|pramādālasyanidrābhistannibadhnāti bhārata||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).