Bhagwad Gita
Chapter 18, Verse 5
यज्ञदानतपःकर्म न त्याज्यं कार्यमेव तत्।यज्ञो दानं तपश्चैव पावनानि मनीषिणाम्।।18.5।।
Acts of sacrifice, charity and penance are not to be given up but should be performed. Indeed, sacrifice, charity and penance purify even the great souls.