Chapter 3 · The Yoga of Action · Krishna said
Bhagavad Gita 3.30 — Offer all actions to Me
मयि सर्वाणि कर्माणि संन्यस्याध्यात्मचेतसा। निराशीर्निर्ममो भूत्वा युध्यस्व विगतज्वरः ॥
mayi sarvāṇi karmāṇi saṃnyasyādhyātmacetasā | nirāśīrnirmamo bhūtvā yudhyasva vigatajvaraḥ ||
Meaning
Offering all your actions to Me, with your mind fixed on the Self, free from hope and the sense of 'mine', and without inner fever, fight.