Bhagwad Gita
Chapter 13, Verse 27
यावत्सञ्जायते किञ्चित्सत्त्वं स्थावरजङ्गमम्।क्षेत्रक्षेत्रज्ञसंयोगात्तद्विद्धि भरतर्षभ।।13.27।।
O chief of the Bharatas, whatever you see in existence, both moving and unmoving, is only the combination of the field of activities and the knower of the field.