Hawzah News Agency – The commander of the faithful, Imam Ali peace be upon him says:

إنّ إحْسانَكَ إلى‏ مَن كادَكَ مِن الأضْدادِ والحُسّادِ، لأغْيَظُ علَيهِم مِن مَواقِعِ إساءتِكَ مِنهُم، وهُو داعٍ إلى‏ صَلاحِهِم.

'Indeed your good-doing to the enemies and the jealous ones who scheme against you is more irritating to them than your taking an offensive stance against them, and it is also a motivation for their reform.'

Source: Ghurar al-Hikam, no. 3637