Bhagavad Gita 11.7

इहैकस्थं जगत्कृत्स्नं पश्याद्य सचराचरम्।मम देहे गुडाकेश यच्चान्यद्द्रष्टुमिच्छसि ॥११.७॥

ihaikasthaṃ jagatkṛtsnaṃ paśyādya sacarācarammama dehe guḍākeśa yaccānyaddraṣṭumicchasi

Now, behold, O Arjuna, in this My body, the entire universe centered in one, including the moving and the unmoving, and whatever else you desire to see.

गीता