यज्ञदानतपःकर्म न त्याज्यं कार्यमेव तत्। यज्ञो दानं तपश्चैव पावनानि मनीषिणाम् ॥

yajña-dāna-tapaḥ-karma na tyājyaṁ kāryam eva tat yajño dānaṁ tapaśh chaiva pāvanāni manīṣhiṇām

Acts of sacrifice, gift and austerity should not be relinquished, but should be performed; sacrifice, gift and also austerity are the purifiers of the intelligent.

In plain words: Krishna says worship, giving and self-discipline should not be dropped. They should be done, because they make wise people purer.