Selections from The Sayings and Preaching of Amir al-Muminin Ali ibn Abi Talib (Peace Be Upon Him) Including His Replies to Questions and Maxims Expressed for Various Purposes.Translated by Sayyid Ali Reza
وَقَالَ (عليه السلام):
Amir al-mu'minin, peace be upon him, said:
فَاعِلُ الْخَيْرِ خَيْرٌ مِنْهُ،
The doer of good is better than the good itself,
وَفَاعِلُ الشَّرِّ شَرٌّ مِنْهُ .
and the doer of evil is worse than the evil itself.