O you who have believed in Allah and the Last Day do not let the reward of what you give as charity go away by reminding of favor and harm, for this is similar to the one who gives out his wealth so that people see him, so they praise him, while he does not believe in Allah nor is certain of the Last Day, so the example of that is like the example of a smooth stone upon which is dust then a heavy rain fell upon it so it removed the dust from it, then left it smooth with nothing upon it, so likewise these ones who show off their deeds vanish with Allah, and they do not find anything of the reward for what they spent. And Allah does not grant success to the disbelievers to hit the truth in their spendings and others.