Abu Dawud
Jihad
Book Number: 008 / Hadith Number: 2639
Narated By Jarir ibn Abdullah : The Apostle of Allah (pbuh) sent an expedition to Khath'am. Some people sought protection by having recourse to prostration, and were hastily killed. When the Prophet (pbuh) heard that, he ordered half the blood-wit to be paid for them, saying: I am not responsible for any Muslim who stays among polytheists. They asked: Why, Apostle of Allah? He said: Their fires should not be visible to one another.