The likeness the description of what they the disbelievers expend in the life of this world in the way of enmity towards the Prophet or in the way of voluntary almsgiving or the like is as the likeness of a wind wherein is a blast of extreme hot or cold that smote the tillage the crops of a people who have wronged themselves through unbelief and disobedience and destroyed it so that they could not profit from it; so it is with what they expend it perishes and they profit nothing from it. God did not wrong them when they lost what they expended but they wronged themselves through unbelief which necessitated this loss.