وَإِذَا قِيلَ إِنَّ وَعۡدَ ٱللَّهِ حَقٌّ وَٱلسَّاعَةُ لَا رَيۡبَ فِيهَا قُلۡتُم مَّا نَدۡرِى مَا ٱلسَّاعَةُ إِن نَّظُنُّ إِلَّا ظَنًّا وَمَا نَحۡنُ بِمُسۡتَيۡقِنِينَ
"And when it was said that the promise of Allah was true, and that the Hour- there was no doubt about its (coming), ye used to say, 'We know not what is the hour: we only think it is an idea, and we have no firm assurance.'"<br/>
And when it was said, to you, O disbelievers: "God's promise, of resurrection, is indeed true, and there is no doubt about the Hour", (read al-saa'atu or al-saa'ata) you said, "We do not know what the Hour is. We only make conjectures (al-Mubarrad said that this actually [means] in nahnu illaa nazunnu zannan) and we are by no means certain" ', that it will come to pass.