Surah Al-Hijr (The Stone Valley), Verse 14

وَلَوْ فَتَحْنَا عَلَیْهِمْ بَابًا مِّنَ السَّمَآءِ فَظَلُّوْا فِیْهِ یَعْرُجُوْنَ ۟

Wa law fatahnaa 'alaihim baabam minas samaaa'i fazaloo feehi ya'rujoon

“Even if We opened out to them a gate from heaven, and they were to continue (all day) ascending therein,”

Quran 15:14 (Yusuf Ali Translation)