Bhagavad Gita · 18.5

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, charity, and austerity should not be abandoned; they must be performed. Sacrifice, charity, and austerity are purifying for the wise.

— Bhagavad Gita 18.5

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