Arjuna said: Nature (prakṛti) and the Person (puruṣa), the field (kṣetra) and the knower of the field (kṣetrajña) as well, This I desire to know, knowledge (jñāna) and the object of knowledge (jñeya), O Beautiful-haired one (Keśava).
The field denotes this body, and wise men call one who knows it the field-knower.
Arjuna said: (0) [What is] Nature? [What the] 'person'? [What] the 'field' and [what] the 'knower of the field'? This, Kṛṣṇa, would I know. [What too is] knowledge? [What] that which should be known?
13.1 Swami Gambhirananda has not translated this śloka. Many editions of the Bhagavadgita do not contain this śloka, including the commentary by Śaṅkarācārya. If this śloka is included, the total number of ślokas in the Bhagavadgita is 701.
13.1 There is no such translation for this śloka.
13.1 Arjuna said -- I wish to learn about Nature (matter) and the Spirit (soul), the field and the knower of the field, knowledge and that which ought to be known, O Keśava.