Mirage
But those who disbelieve, their deeds are like a mirage in a desert. The thirsty one thinks it is water, but when he reaches it, he finds nothing. Instead, he finds Allah there, who settles his account.
24:39As for those who disbelieve, their deeds are as a mirage in a desert. The thirsty one supposeth it to be water till he cometh unto it and findeth it naught, and findeth, in the place thereof, Allah Who payeth him his due; and Allah is swift at reckoning.