Bhagavad Gita 11.7

इहैकस्थं जगत्कृत्स्नं पश्यद्य सचराचरम् |
मम देहे गुडाकेश यच्चान्यादृष्टुमिचसि

Translation

Behold now, Arjun, the entire universe, with everything moving and non-moving, assembled together in My universal form. Whatever else you wish to see, observe it all within this universal form.