Chapter 4 · Knowledge and Renunciation of Action · Krishna said
Bhagavad Gita 4.28 — Many ways of offering
द्रव्ययज्ञास्तपोयज्ञा योगयज्ञास्तथापरे। स्वाध्यायज्ञानयज्ञाश्च यतयः संशितव्रताः ॥
dravyayajñāstapoyajñā yogayajñāstathāpare | svādhyāyajñānayajñāśca yatayaḥ saṃśitavratāḥ ||
Meaning
Some offer wealth as yajna, some austerity, some the practice of yoga; others, strict in their vows, offer the study of scripture and knowledge.