Bhagavad Gita 13.34

क्षेत्रक्षेत्रज्ञयोरेवमन्तरं ज्ञानचक्षुषा।
भूतप्रकृतिमोक्षं च ये विदुर्यान्ति ते परम् ॥

kṣetra-kṣetrajñayorevam-antaraṃ jñāna-cakṣuṣā
bhūta-prakṛti-mokṣaṃ ca ye vidur-yānti te param – 34

Those who, with the power of spiritual insight, know the difference between the Field (kshetra) and the Knower of the Field (Kshetrajña), and equally the truth about the freedom from the stronghold of Prakṛti, reach the Supreme.