Bhagavad Gita · 4.28

द्रव्ययज्ञास्तपोयज्ञा योगयज्ञास्तथापरे।स्वाध्यायज्ञानयज्ञाश्च यतयः संशितव्रताः॥

dravya-yajñās tapo-yajñā yoga-yajñās tathāpare svādhyāya-jñāna-yajñāśh cha yatayaḥ saṁśhita-vratāḥ

Some offer their material possessions as sacrifice, some offer austerity, some offer yoga practice, and others of strict vows offer the study of scriptures and the pursuit of knowledge as sacrifice.

— Bhagavad Gita 4.28

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)