Bhagavad Gita 9.7
All beings, O Arjuna, return at the end of every cosmic cycle into the realm of Nature, which is a part of Me, and at the start of the next I send them forth again.
सर्वभूतानि कौन्तेय प्रकृतिं यान्ति मामिकाम्।
कल्पक्षये पुनस्तानि कल्पादौ विसृजाम्यहम्॥sarvabhūtāni kaunteya prakṛtiṃ yānti māmikām|
kalpakṣaye punastāni kalpādau visṛjāmyaham||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).