Verse
श्रीभगवानुवाच:इदं शरीरं कौन्तेय क्षेत्रमित्यभिधीयते ।एतद्यो वेत्ति तं प्राहुः क्षेत्रज्ञ इति तद्विदः ॥
The Blessed Lord said: This body, O son of Kunti, is called the Field; that which takes cognizance of the Field is called the Knower of the Field by the sages.
Gītā 13·2