2:262Those who spend their wealth in the way of God, and then do not follow up what they spent with reminders of their generosity or with insults, will have their reward with their Lord—they have nothing to fear, nor shall they grieve.

2:264O you who believe! Do not nullify your charitable deeds with reminders and hurtful words, like him who spends his wealth to be seen by the people, and does not believe in God and the Last Day. His likeness is that of a smooth rock covered with soil: a downpour strikes it, and leaves it bare—they gain nothing from their efforts. God does not guide the disbelieving people.