The Arabic word used here sounds like a missile thrown with violence. Its sound adds to its meaning. In a moment, all the crops of that field are destroyed, laid to waste. It is only a moment which changes everything. All this devastation happens before one can take one s breath.
Nothing is left.
This is the example given by the Quran to describe what the unbelievers may spend on what they may count as their blessings of riches and children. All will be laid to waste giving them no enjoyment and no reward. It is they who have abandoned the way of life which groups together every single aspect of goodness and righteousness and makes of them a straight, consistent line which has a recognized motive and a clear goal. Goodness does not come as a result of a momentary thought, a vague desire or a sudden impulse. It is they who have chosen to be in error and to break loose from the protection offered by the bond with Allah.