وَإِنْ عَاقَبْتُمْ فَعَاقِبُواْ بِمِثْلِ مَا عُوقِبْتُم بِهِ وَلَئِن صَبَرْتُمْ لَهُوَ خَيْرٌ لِّلصَّابِرينَ
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سورة النحل
(16/126) And if ye chastise, then chastise with the like of that wherewith ye were afflicted, and if ye endure patiently, then surely it is better for the patient.
Surah An-Nahl