Chapter 8 · The Imperishable Absolute · Krishna said
Bhagavad Gita 8.3 — Brahman, Self and action
श्रीभगवानुवाच। अक्षरं ब्रह्म परमं स्वभावोऽध्यात्ममुच्यते। भूतभावोद्भवकरो विसर्गः कर्मसंज्ञितः ॥
śrībhagavānuvāca | akṣaraṃ brahma paramaṃ svabhāvo'dhyātmamucyate | bhūtabhāvodbhavakaro visargaḥ karmasaṃjñitaḥ ||
Meaning
Krishna says: The imperishable Supreme is Brahman. Its presence as the individual self is called adhyatma. The creative offering that brings beings into existence is called karma (action).