ENOfficial
‘Abdallah b. az-Zubair told that God’s Messenger gave the decision that the two adversaries should be made to sit in front of the judge. Ahmad and Abu Dawud transmitted it.
Source: sunnah.com
Other translations
Arabic
عَنْ عَبْدِ اللَّهِ بْنِ الزُّبَيْرِ رَضِيَ اللَّهُ عَنْهُمَا قَالَ: قَضَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَّ الْخَصْمَيْنِ يَقْعُدَانِ بَيْنَ يَدَيِ الْحَاكِمِ. رَوَاهُ أَحْمَدُ وَأَبُو دَاوُدَ
sunnah.com