O Brahmā, when you are absorbed in devotional service, in the course of your creative activities, you will see Me in you and throughout the universe, and you will see that you yourself, the universe and the living entities are all in Me.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तत आत्मनि लोके च भक्तियुक्तः समाहितः । द्रष्टासि मां ततं ब्रह्मन् मयि लोकांस्त्वमात्मनः
tata ātmani loke ca bhaktiyuktaḥ samāhitaḥ | draṣṭāsi māṃ tataṃ brahman mayi lokāṃstvamātmanaḥ
SB 3.9.31