(2) باب تَعْظِيمِ الدَّمِ
It was narrated that 'Abdullah bin 'Amr bin Al-'As said:
"The Messenger of Allah [SAW] said: 'By the One in Whose Hand is my soul, killing a believer is more grievous before Allah than the extinction of the whole world.'" (RU)
Reference (RU): Sunan an-Nasa'i 3986 (RU)
In-book reference (RU): Book 37, Hadith 21 (RU)
English translation (RU): Vol. 5, Book 37, Hadith 3991 (RU)