yajñadānatapaḥkarma na tyājyaṃ kāryameva tat |yajño dānaṃ tapaścaiva pāvanāni manīṣiṇām ||
Acts of sacrifice, giving and austerity should not be abandoned; they are to be done. Sacrifice, giving and austerity indeed purify the wise.
Explanation
Krishna is answering Arjuna's question about renunciation (tyāga) and begins by stating his firm view. Sacrifice (yajña), giving (dāna) and austerity (tapas) are duties that should not be dropped. He calls them purifying for the wise (manīṣin), meaning those who act with discernment. The next verse adds that they should be done without attachment to results.