Bhagwad Gita
Chapter 13, Verse 1
अर्जुन उवाच
प्रकृतिं पुरुषं चैव क्षेत्रं क्षेत्रज्ञमेव च।
एतद्वेदितुमिच्छामि ज्ञानं ज्ञेयं च केशव।।13.1।।
Arjuna said, "I wish to learn about Nature and the Spirit, the field and the knower of the field, knowledge and that which ought to be known, O Kesava."