and when it was said to them surely allahs promise is true and there is no doubt regarding the hour of resurrection you were wont to say we do not know what the hour is. we are simply making conjectures and are not at all certain.
وإذا قيل إن وعد الله حق والساعة لا ريب فيها قلتم ما ندري ما الساعة إن نظن إلا ظنا وما نحن بمستيقنين