Jami` at-Tirmidhi 1604

Narrated Qais bin Abu Hazim: From Jarir bin 'Abdullah that the Messenger of Allah (ﷺ) sent a military expedition to Khath'am. So some people (living there) sought safety by prostrating, but they were met quickly and killed. News of this reached the Prophet (ﷺ) upon which he commanded that they be given half of the 'Aql (blood money). And he said: "I am free from every Muslim that lives among the idolaters." They said:"O Messenger of Allah: How is that ?" He said: "They should not see each other's campfires