Ibn Muflih reported: Imam Ahmad ibn Hanbal, may Allah be pleased with him, said, “Supplication is a proportional punishment. Whoever supplicates against the one who wronged him, he has not been patient.”
Imam Ibn Muflih commented, “By that he means the supplicant has retaliated. Retaliation is permissible, but the Almighty said: Whoever endures patiently and forgives, surely this is a resolve to aspire to, (42:23)… If one supplicates against the wrongdoer to be hurt by the same amount with which he was hurt by him, that is justice.”
Source: al-Furū’ wa Taṣḥīḥ al-Furū’ 10/123
عن ابن مفلح قَالَ الْإِمَامُ أَحْمَدُ رَضِيَ اللَّهُ عَنْهُ الدُّعَاءُ قِصَاصٌ وَمَنْ دَعَا عَلَى ظَالِمِهِ فَمَا صَبَرَ
قال ابن مفلح يُرِيدُ بِذَلِكَ أَنَّ الدَّاعِيَ مُنْتَصِرٌ وَالِانْتِصَارُ وَإِنْ كَانَ جَائِزًا لَكِنْ قَالَ تَعَالَى وَلَمَنْ صَبَرَ وَغَفَرَ إِنَّ ذَلِكَ لَمِنْ عَزْمِ الْأُمُورِ … وَإِذَا دَعَا عَلَيْهِ بِمَا آلَمَهُ بِقَدْرِ أَلَمِ ظُلْمِهِ فَهَذَا عَدْلٌ
10/123 الفروع وتصحيح الفروع باب التعزير
