My Lord, You are the same person who in the beginning created this material world by His personal external energy. After the creation of this world of three guṇas [sattva, rajas and tamas], You appear to have entered it, although in fact You have not.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
स एव स्वप्रकृत्येदं सृष्ट्वाग्रे त्रिगुणात्मकम् । तदनु त्वं ह्यप्रविष्टः प्रविष्ट इव भाव्यसे
sa eva svaprakṛtyedaṃ sṛṣṭvāgre triguṇātmakam | tadanu tvaṃ hyapraviṣṭaḥ praviṣṭa iva bhāvyase
SB 10.3.14