Bhagwad Gita
Chapter 15, Verse 17
उत्तमः पुरुषस्त्वन्यः परमात्मेत्युदाहृतः।यो लोकत्रयमाविश्य बिभर्त्यव्यय ईश्वरः।।15.17।।
Besides these two, there is the greatest living personality, the Lord Himself, who has entered into these worlds and is maintaining them.