(1) باب
It was narrated from 'Abdullah that:
The Prophet [SAW] said: "No person is killed wrongfully, but a share of responsibility for his blood will be upon the first son of Adam, because he was the first one to set the precedence, of killing."
Reference: Sunan an-Nasa'i 3985
In-book reference: Book 37, Hadith 20
English translation: Vol. 5, Book 37, Hadith 3990