Bhagavad Gita 11.3

एवमेतद्यथात् त्वमात्मानं भगवान |
दृष्टुमिच्छामि ते रूपमैश्वरं पुरूषोत्तम

Translation

O Supreme Lord, You are precisely what You declare yourself to be. Now I desire to see Your divine cosmic form, O Greatest of persons.