Chapter 4 · Knowledge and Renunciation of Action · Krishna said
Bhagavad Gita 4.33 — Knowledge is the best offering
श्रेयान्द्रव्यमयाद्यज्ञाज्ज्ञानयज्ञः परन्तप। सर्वं कर्माखिलं पार्थ ज्ञाने परिसमाप्यते ॥
śreyāndravyamayādyajñājjñānayajñaḥ parantapa | sarvaṃ karmākhilaṃ pārtha jñāne parisamāpyate ||
Meaning
The yajna of knowledge is better than a yajna of material things, Arjuna. All action, without exception, finds its fulfilment in knowledge.