Jihad (Kitab Al-Jihad)
Dawud :: Book 14 : Hadith 2632
Narrated Salamah ibn al-Akwa':
The Apostle of Allah (peace_be_upon_him) appointed AbuBakr our commander and we fought with some people who were polytheists, and we attacked them at night, killing them. Our war-cry that night was "put to death; put to death." Salamah said: I killed that night with my hand polytheists belonging to seven houses.