Ya-Sin - 36:48

وَيَقُولُونَ مَتَى هَذَا الْوَعْدُ إِن كُنتُمْ صَادِقِينَ
[36:48]
And they say: When will this threat come to pass, if you are truthful?
Further, they say, "When will this promise (come to pass), if what ye say is true?"
And they say: When will this promise be fulfilled, if ye are truthful?