وَإِنۡ عَاقَبۡتُمۡ فَعَاقِبُواْ بِمِثۡلِ مَا عُوقِبۡتُم بِهِۦۖ وَلَئِن صَبَرۡتُمۡ لَهُوَ خَيۡرٞ لِّلصَّـٰبِرِينَ
Wa in 'aaqabtum fa'aaqiboo bimisli maa 'ooqibtum bihee wa la'in sabartum lahuwa khairul lissaabireen
English Translation
And if you punish [an enemy, O believers], punish with an equivalent of that with which you were harmed. But if you are patient - it is better for those who are patient
— Saheeh International