An-Naba • BN-TAFSEER-IBN-E-KASEER
﴿ وَفُتِحَتِ ٱلسَّمَآءُ فَكَانَتْ أَبْوَٰبًۭا ﴾
“and when the skies are opened and become [as wide-flung] gates;”
Please check ayah 78:30 for complete tafsir.