Bhagavad Gita 4.33
The sacrifice of wisdom is superior to any material sacrifice, for, O Arjuna, the pinnacle of action is always realization.
श्रेयान्द्रव्यमयाद्यज्ञाज्ज्ञानयज्ञः परन्तप।
सर्वं कर्माखिलं पार्थ ज्ञाने परिसमाप्यते॥śreyāndravyamayādyajñājjñānayajñaḥ parantapa|
sarvaṃ karmākhilaṃ pārtha jñāne parisamāpyate||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).