Qisas
Qisas was a practice used as a resolution tool in inter-tribal conflicts in pre-Islamic Arab society. The basis of this practice was that a member of the tribe to which the murderer belonged was handed over to the victim's family for execution, equivalent to the social status of the murdered person. The condition of social equivalence meant the execution of a member of the murderer's tribe who was equivalent to the murdered, in that the murdered person was male or female, slave or free, elite or commonplace. For example, only one slave can be killed for a slave, and a woman can be killed for a woman. On this pre-islamic understandings the discussion whether a Muslim could be executed for a non-Muslim was added in Islamic period.