"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." (Using translation from Tirmidhī 2255)   

أَنَّ النَّبِيَّ ﷺ قَالَ «انْصُرْ أَخَاكَ ظَالِمًا أَوْ مَظْلُومًا» فَقَالُوا يَا رَسُولَ اللَّهِ هَذَا نَنْصُرُهُ مَظْلُومًا فَكَيْفَ أَنْصُرُهُ ظَالِمًا؟ قَالَ «تَكُفُّهُ عَنِ الظُّلْمِ»  

[Machine] The Messenger of Allah ﷺ said, "Support your brother, whether he is an oppressor or oppressed." The companions asked, "O Messenger of Allah, we understand supporting him when he is oppressed, but how do we support him when he is an oppressor?" He replied, "By preventing him from oppression."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «انْصُرْ أَخَاكَ ظَالِمًا أَوْ مَظْلُومًا» قَالُوا يَا رَسُولَ اللَّهِ هَذَا يَنْصُرُهُ مَظْلُومًا فَكَيْفَ يَنْصُرُهُ ظَالِمًا قَالَ «يَكُفُّهُ عَنِ الظُّلْمِ»  

"انصر أخاك ظالمًا، أَو مظلومًا. قيل: يا رسولَ الله أَنْصُره مظلومًا، فكيف أَنصره ظالمًا؟ قال: تحجِزه عن الظُلْمِ. فإِن ذلك نصْرُه".