Bhagavad Gita · 8.1

अर्जुन उवाचकिं तद्ब्रह्म किमध्यात्मं किं कर्म पुरुषोत्तम।अधिभूतं च किं प्रोक्तमधिदैवं किमुच्यते॥

arjuna uvācha kiṁ tad brahma kim adhyātmaṁ kiṁ karma puruṣhottama adhibhūtaṁ cha kiṁ proktam adhidaivaṁ kim uchyate

Arjuna said: O Supreme Person, what is Brahman? What is the Self? What is karma? What is said to be the material realm? And what is called the divine realm?

— Bhagavad Gita 8.1

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