Chapter 13 · verse 3 · gita.yoga.org
Bhagavad Gita 13.3
क्षेत्रज्ञं चापि मां विद्धि सर्वक्षेत्रेषु भारत। क्षेत्रक्षेत्रज्ञयोर्ज्ञानं यत्तज्ज्ञानं मतं मम
Do thou also know Me as the knower of the field in all fields, O Arjuna. Knowledge of both the field and the knower of the field is considered by Me to be the knowledge.