"During Jihad (religion war), many men and women become war captives. The Amirul Mu’minin [leader of the believers, or caliph—an office now vacant] has the choice of distributing them amongst the Mujahidin [warriors of jihad], in which event they will become the property of these Mujahidin. This enslavement is the penalty for disbelief (kufr)."