Bhagavad Gita 9.4
The whole world is pervaded by Me, yet My form is not visible. All living beings have their being in Me, yet I am not confined by them.
मया ततमिदं सर्वं जगदव्यक्तमूर्तिना।
मत्स्थानि सर्वभूतानि न चाहं तेष्ववस्थितः॥mayā tatamidaṃ sarvaṃ jagadavyaktamūrtinā|
matsthāni sarvabhūtāni na cāhaṃ teṣvavasthitaḥ||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).