Surah An-Nahl, ayah 126

وَإِنۡ عَاقَبۡتُمۡ فَعَاقِبُواْ بِمِثۡلِ مَا عُوقِبۡتُم بِهِۦۖ وَلَئِن صَبَرۡتُمۡ لَهُوَ خَيۡرٞ لِّلصَّٰبِرِينَ ١٢٦

Wa in 'āqabtum fa'āqibū bimithli mā 'ūqibtum bihī wala'in sabartum lahuwa khayrul lis-sābirīn

And if you punish [an enemy, O believers], punish with an equivalent of that with which you were harmed.⁷²⁰ But if you are patient - it is better for those who are patient.