وَلَوْ فَتَحْنَا عَلَيْهِم بَابًا مِّنَ ٱلسَّمَآءِ فَظَلُّوا فِيهِ يَعْرُجُونَ

Walaw fatahna AAalayhim babanmina assama-i fathalloo feehiyaAArujoon

And [even] if We opened to them a gate from the heaven and they continued therein to ascend,