Al-Baqara 2:264

O you who believe, do not nullify your charities with reminders and hurtful words, like the one who spends his wealth to show off before people but does not believe in Allah or the Last Day. His likeness is that of a smooth rock upon which is dust, when it is hit by a heavy rain it is left bare[159]. They will gain no reward from their deeds[160], and Allah does not guide the disbelieving people.

[159] Soilless and bare, unable to grow plants.
[160] Their insincere spending will have no harvest to reap in the Hereafter.

O you who have believed, do not invalidate your charities with reminders [of it] or injury as does one who spends his wealth [only] to be seen by the people and does not believe in Allāh and the Last Day. His example is like that of a [large] smooth stone upon which is dust and is hit by a downpour that leaves it bare. They are unable [to keep] anything of what they have earned. And Allāh does not guide the disbelieving people.

264. O you who believe! Do not render in vain your Sadaqah (charity) by reminders of your generosity or by injury, like him who spends his wealth to be seen of men, and he does not believe in Allâh, nor in the Last Day. His likeness is the likeness of a smooth rock on which is a little dust; on it falls heavy rain which leaves it bare. They are not able to do anything with what they have earned. And Allâh does not guide the disbelieving people.

O ye who believe! Render not vain your almsgiving by reproach and injury, like him who spendeth his wealth only to be seen of men and believeth not in Allah and the Last Day. His likeness is as the likeness of a rock whereon is dust of earth; a rainstorm smiteth it, leaving it smooth and bare. They have no control of aught of that which they have gained. Allah guideth not the disbelieving folk.