Nahj al-Balāgha
Hadith 1663٣٢. وَقَالَ (عليه السلام): فَاعِلُ الْخَيْرِ خَيْرٌ مِنْهُ، وَفَاعِلُ الشَّرِّ شَرٌّ مِنْهُ.
32. Amīr al-mu’minīn, peace be upon him, said: The doer of good is better than the good itself, and the doer of evil is worse than the evil itself.