أَخْبَرَنَا مُحَمَّدُ بْنُ الْعَلاَءِ، قَالَ حَدَّثَنَا أَبُو مُعَاوِيَةَ، قَالَ حَدَّثَنَا الأَعْمَشُ، عَنْ شَقِيقٍ، عَنْ عَبْدِ اللَّهِ، قَالَ أَوَّلُ مَا يُقْضَى بَيْنَ النَّاسِ فِي الدِّمَاءِ ‏.‏

It was narrated that 'Abdullah said: "The first matter concerning which scores will be settled among the people will be bloodshed." Translation Not Available

Book Ref: Sunan An Nisai Book 37 Hadith 3996
Web Ref:  Sunan An Nisai Vol 5 Book 37 Hadith 4001