Bhagavad Gita · 4.6

अजोऽपि सन्नव्ययात्मा भूतानामीश्वरोऽपि सन्।प्रकृतिं स्वामधिष्ठाय सम्भवाम्यात्ममायया॥

ajo 'pi sann avyayātmā bhūtānām īśhvaro 'pi san prakṛitiṁ svām adhiṣhṭhāya sambhavāmy ātma-māyayā

Although I am unborn and My nature is imperishable, and although I am the Lord of all beings, yet by governing My own material nature, I manifest by My own divine potency.

— Bhagavad Gita 4.6

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