Bhagavad Gita · 11.12

दिवि सूर्यसहस्रस्य भवेद्युगपदुत्थिता।यदि भाः सदृशी सा स्याद्भासस्तस्य महात्मनः॥

divi sūrya-sahasrasya bhaved yugapad utthitā yadi bhāḥ sadṛśhī sā syād bhāsas tasya mahātmanaḥ

If a thousand suns were to rise simultaneously in the sky, that radiance might resemble the effulgence of that great being.

— Bhagavad Gita 11.12

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