(2) باب تَعْظِيمِ الدَّمِ
It was narrated that 'Abdullah said:
"The Messenger of Allah [SAW] said: 'The first thing concerning which a person will be brought to account will be the Salah, and the first thing concerning which scores will be settled among the people, will be bloodshed."
Reference: Sunan an-Nasa'i 3991
In-book reference: Book 37, Hadith 26
English translation: Vol. 5, Book 37, Hadith 3996