He was chosen because he belonged to the same tribe as the woman upon whom the ḥadd (prescribed penalty) was to be enforced, and a tribe is more likely to see the sentence carried out when its executioner comes from among their own.

– arjum-hā: “Stone her.” Rajm (stoning) is throwing stones at the offender until death; it is the punishment ordained for an adulterer who has previously been married.