Arabic (Original)
حَدَّثَنَا يَزِيدُ أَخْبَرَنَا حُمَيْدٌ عَنْ أَنَسٍ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ انْصُرْ أَخَاكَ ظَالِمًا أَوْ مَظْلُومًا قِيلَ يَا رَسُولَ اللَّهِ هَذَا نَنْصُرُهُ مَظْلُومًا فَكَيْفَ نَنْصُرُهُ ظَالِمًا قَالَ تَمْنَعُهُ مِنْ الظُّلْمِ.
English Translation
Yazid informed us: Humayd informed us, from Anas, that the Messenger of Allah, peace and blessings be upon him, said, "Help your brother, whether he is a wrongdoer or is wronged." It was said, "O Messenger of Allah, we understand helping him when he is wronged, but how do we help him when he is a wrongdoer?" He said, "By restraining him from wrongdoing."