Chapter 4 · Knowledge and Renunciation of Action · Krishna said
Bhagavad Gita 4.19 — Actions burned by knowledge
यस्य सर्वे समारम्भाः कामसङ्कल्पवर्जिताः। ज्ञानाग्निदग्धकर्माणं तमाहुः पण्डितं बुधाः ॥
yasya sarve samārambhāḥ kāmasaṅkalpavarjitāḥ | jñānāgnidagdhakarmāṇaṃ tamāhuḥ paṇḍitaṃ budhāḥ ||
Meaning
One whose every undertaking is free from selfish desire and planning, and whose actions are burned up in the fire of knowledge, is called wise by the learned.