Bhagavad Gita 13.2

श्रीभगवानुवाच The Blessed Lord said

इदं शरीरं कौन्तेय क्षेत्रमित्यभिधीयते।एतद्यो वेत्ति तं प्राहुः क्षेत्रज्ञ इति तद्विदः ॥१३.२॥

idaṃ śarīraṃ kaunteya kṣetramityabhidhīyateetadyo vetti taṃ prāhuḥ kṣetrajña iti tadvidaḥ

The Blessed Lord said, "O Arjuna, this body is called the field; he who knows it is called the knower of the field by those who know them."

गीता