Bhagavad Gita · 13.1

अर्जुन उवाचप्रकृतिं पुरुषं चैव क्षेत्रं क्षेत्रज्ञमेव च।एतद्वेदितुमिच्छामि ज्ञानं ज्ञेयं च केशव॥

arjuna uvācha prakṛtiṁ puruṣhaṁ chaiva kṣhetraṁ kṣhetrajñam eva cha etad veditum ichchhāmi jñānaṁ jñeyaṁ cha keśhava

Arjuna said: O Keshava, I wish to know about prakriti (material nature) and purusha (the conscious being), the field and the knower of the field, and about knowledge and the object of knowledge.

— Bhagavad Gita 13.1

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)