Wa laa tastawil hasanatu wa las saiyi'ah; idfa' billatee hiya ahsanu fa'izal lazee bainaka wa bainahoo 'adaawatun ka'annahoo waliyun hameem
(O Prophet), good and evil are not equal. Repel (evil) with that which is good, and you will see that he, between whom and you there was enmity, shall become as if he were a bosom friend (of yours).