Bhagavad Gita · 11.3

एवमेतद्यथात्थ त्वमात्मानं परमेश्वर।द्रष्टुमिच्छामि ते रूपमैश्वरं पुरुषोत्तम॥

evam etad yathāttha tvam ātmānaṁ parameśhvara draṣhṭum ichchhāmi te rūpam aiśhvaraṁ puruṣhottama

O Supreme Lord, you are as you have described yourself. Now I wish to see your divine cosmic form, O Supreme Being.

— Bhagavad Gita 11.3

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