"And it is upon those (relatives) of the killed one to block (any punishment) the first (in line) then the first, even if that one is a woman."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ وَعَلَى الْمُقْتَتِلِينَ أَنْ يَنْحَجِزُوا الأَوَّلَ فَالأَوَّلَ وَإِنْ كَانَتِ امْرَأَةٌ