Mai yashfa' shafaa'atan hasanatay yakul lahoo naseebum minhaa wa mai yashfa' shafaa'tan saiyi'atanny-yakul lahoo kiflum minhaa; wa kaanal laahu 'alaa kulli shai'im Muqeetaa
Whoever joins himself (to another) in a good cause shall have a share of it, and whoever joins himself (to another) in an evil cause shall have the responsibility of it, and Allah controls all things.