حَدَّثَنَا وَكِيعٌ عَنْ شَرِيكٍ عَنْ سِمَاكٍ عَنْ حَنَشٍ عَنْ عَلِيٍّ رَضِيَ اللَّهُ عَنْهُ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا جَلَسَ إِلَيْكَ الْخَصْمَانِ فَلَا تَكَلَّمْ حَتَّى تَسْمَعَ مِنْ الْآخَرِ كَمَا سَمِعْتَ مِنْ الْأَوَّلِ
مسند امام احمد بن حنبل · Hadith 745
It was narrated that 'Ali (RA) said: The Messenger of Allah (PBUH) said: "If two disputants sit before you, do not speak until you have listened to the second one as you listened to the first."
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020