Quran 54:11 from Surah Al-Qamar on Divine Marvels.
فَفَتَحۡنَآ أَبۡوَٰبَ ٱلسَّمَآءِ بِمَآءٖ مُّنۡهَمِرٖ
English translation: So We opened (the) gates (of) heaven with water pouring down
Transliteration: fafatahna abwaba al-samai bimain mun'hamirin