The sign likely consisted of a solemn decree that was known and observed by others and that was intended to prevent his being killed out of revenge.
فقد كانت هذه العلامة قرارا جديا يعرفه الآخرون ويتبعونه .‏ والغاية منه منعهم عن قتل قايين بدافع الانتقام .‏