That Cain married his sister or a later female descendant of Adam through the marriage of any of Adam’s sons or daughters is viewed by some societies today as unthinkable.
ان زواج قايين من اخته او من امرأة تحدرت من آدم عن طريق زواج ايّ من ابنائه او بناته تعتبره بعض المجتمعات اليوم امرا غير وارد البتة .‏