Hadith 923
حَدَّثَنَا عَبْدُ الرَّحْمَنِ، أَخْبَرَنَا سُفْيَانُ، عَنْ مَنْصُورٍ، عَنِ الْحَكَمِ، عَمَّنْ سَمِعَ عَلِيًّا، رَضِيَ اللَّهُ عَنْهُ وَابْنَ مَسْعُودٍ يَقُولَانِ قَضَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِالْجِوَارِ.
It was narrated from al-Hakam, from someone who heard ‘Ali (رضي الله عنه) and Ibn Mas`ood say:
The Messenger of Allah (ﷺ) issued a judgement on the basis of one being the neighbour of the other.
Reference : Musnad Ahmad 923
In-book reference : Book 5, Hadith 350