If We delay the penalty for them for a definite term, they are sure to say, "What keeps it back?" Ah! On the day it (actually) reaches them, nothing will turn it away from them, and they will be completely encircled by that which they used to mock at!
And if We hold back from them the punishment for a limited time, they will surely say, "What detains it?" Unquestionably, on the Day it comes to them, it will not be averted from them, and they will be enveloped by what they used to ridicule.