Abu Dawud Book 34, Hadith Number 4507.
Chapter : Taking oaths by the people of a locality regarding a murder therein.
Narated By Abdullah ibn Amr ibn al-‘As : The Apostle of Allah (PBUH) killed a man of Banu Nadr ibn Malik at Harrah ar-Righa’ at the bank of Layyat al-Bahrah. The transmitter Mahmud (ibn Khalid) also mentioned the words along with the words “at Bahrah” “the slayer and the slain were from among them”. Mahmud alone transmitted in this tradition the words “at the bank of Layyah”.