Ja'far ibn Abi'l-Mughira said, "Sa'id ibn Jubayr stayed with me and said tht Ibn 'Abbas related to me that he used to say, 'Where are those who play with gambling arrows for the slaughtered camel? They buy a camel with ten shares. Then they shuffle the arrows and it becomes nine shares and they continue until comes down to one share. The others lose their shares to the one share. That is gambling (arrow-shuffling).'"  

أَنَّهُ كَانَ يُقَالُ أَيْنَ أَيْسَارُ الْجَزُورِ؟ فَيَجْتَمِعُ الْعَشَرَةُ فَيَشْتَرُونَ الْجَزُورَ بِعَشَرَةِ فِصْلاَنٍ إِلَى الْفِصَالِ فَيُجِيلُونَ السِّهَامَ فَتَصِيرُ لَتِسْعَةٍ حَتَّى تَصِيرَ إِلَى وَاحِدٍ وَيَغْرَمُ الْآخَرُونَ فَصِيلاً فَصِيلاً إِلَى الْفِصَالِ فَهُوَ الْمَيْسِرُ  

Ibn 'Umar said, "Arrow-shuffling is gambling."  

الْمَيْسِرُ الْقِمَارُ