Bhagavad Gita 7.6

It is the womb of all beings; for I am He by Whom the worlds were created and shall be dissolved.

एतद्योनीनि भूतानि सर्वाणीत्युपधारय।
अहं कृत्स्नस्य जगतः प्रभवः प्रलयस्तथा॥

etadyonīni bhūtāni sarvāṇītyupadhāraya|
ahaṃ kṛtsnasya jagataḥ prabhavaḥ pralayastathā||

English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).