Chapter 18 · Liberation through Renunciation · Krishna said
Bhagavad Gita 18.6 — Action without attachment
एतान्यपि तु कर्माणि सङ्गं त्यक्त्वा फलानि च। कर्तव्यानीति मे पार्थ निश्चितं मतमुत्तमम् ॥
etānyapi tu karmāṇi saṅgaṃ tyaktvā phalāni ca | kartavyānīti me pārtha niścitaṃ matamuttamam ||
Meaning
But even these should be done without attachment and without wanting their fruits. O Partha, this is My clear and highest view.