قَالَ حَدَّثَنَا عَلِيُّ بْنُ الْحُسَيْنِ بْنِ إِبْرَاهِيمَ حَدَّثَنَا عُمَرُ بْنُ يُونُسَ حَدَّثَنَا عَاصِمُ بْنُ مُحَمَّدِ بْنِ زَيْدٍ الْعُمَرِيُّ حَدَّثَنِي الْمُثَنَّی بْنُ يَزِيدٍ عَنْ مَطَرٍ الْوَرَّاقِ عَنْ نَافِعٍ عَنْ ابْنِ عُمَرَ عَنْ النَّبِيِّ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ بِمَعْنَاهُ قَالَ وَمَنْ أَعَانَ عَلَی خُصُومَةٍ بِظُلْمٍ فَقَدْ بَائَ بِغَضَبٍ مِنْ اللَّهِ عَزَّ وَجَلَّ
سنن ابودوٗد · Hadith 3598
The tradition mentioned above has also been transmitted by Ibn Umar from the Prophet ﷺ through different chain of narrators to the same effect. In this version he also said: "He who assits in a dispute unjustly deserves the anger of Allah, Most High.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020