Jami` at-Tirmidhi 2255
جامع الترمذي#2255Sahihحَدَّثَنَا مُحَمَّدُ بْنُ حَاتِمٍ الْمُكْتِبُ، حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ الأَنْصَارِيُّ، حَدَّثَنَا حُمَيْدٌ الطَّوِيلُ، عَنْ أَنَسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " انْصُرْ أَخَاكَ ظَالِمًا أَوْ مَظْلُومًا " . قُلْنَا يَا رَسُولَ اللَّهِ نَصَرْتُهُ مَظْلُومًا فَكَيْفَ أَنْصُرُهُ ظَالِمًا قَالَ " تَكُفُّهُ عَنِ الظُّلْمِ فَذَاكَ نَصْرُكَ إِيَّاهُ " . قَالَ وَفِي الْبَابِ عَنْ عَائِشَةَ . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .
It was narrated from Anas bin Malik, that the Prophet(s.a.w) said:"Help your brother whether he is an oppressor or oppressed." It was said: "O Messenger of Allah! I help him when he is oppressed. But how can I help him when he oppresses?" He said: "Prevent him from oppression, that is your help for him
Scholarly Authentication
The label above is the grade most of these scholars gave, each scholar counted once — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. When they judged only its chain of narrators (“Isnaad”), the label says “Sound chain”. Each scholar's own wording:
Our source also lists this ruling under Ahmad Muhammad Shakir, the editor of the printed edition it was taken from. It is al-Albani's ruling printed again, so it is counted once.
In-book reference: 33:98