As said in Bhagavad Gita 18.5- acts of sacrifice, charity and penance are not to be given up; they must be performed. Indeed, sacrifice, charity and penance purify even the great souls.
International Society For Krishna Consciousness
Srila Prabhupad Vedic Gurukul
Sri Gokul Gaushala,Amritsar
His Divine Grace
A.C. Bhaktivedanta Swami Prabhupada