Bhagavad Gita · 11.29

यथा प्रदीप्तं ज्वलनं पतङ्गाविशन्ति नाशाय समृद्धवेगाः।तथैव नाशाय विशन्ति लोका-स्तवापि वक्त्राणि समृद्धवेगाः॥

yathā pradīptaṁ jvalanaṁ pataṅgā viśhanti nāśhāya samṛddha-vegāḥ tathaiva nāśhāya viśhanti lokās tavāpi vaktrāṇi samṛddha-vegāḥ

As moths rush with great speed into a blazing fire for their own destruction, so also do these beings rush into your mouths with great speed for their destruction.

— Bhagavad Gita 11.29

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