Bhagavad Gita · 10.11

तेषामेवानुकम्पार्थमहमज्ञानजं तमः।नाशयाम्यात्मभावस्थो ज्ञानदीपेन भास्वता॥

teṣhām evānukampārtham aham ajñāna-jaṁ tamaḥ nāśhayāmy ātma-bhāva-stho jñāna-dīpena bhāsvatā

Out of compassion for them, I, dwelling within their hearts, destroy the darkness born of ignorance with the luminous lamp of knowledge.

— Bhagavad Gita 10.11

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)