52:44
وَإِن يَرَوْا۟ كِسْفًا مِّنَ ٱلسَّمَآءِ سَاقِطًا يَقُولُوا۟ سَحَابٌ مَّرْكُومٌ
wa-in yaraw kis'fan mina l-samāi sāqiṭan yaqūlū saḥābun markūmun
Even if they saw a piece of heaven falling down on them, they would say, ‘Just a heap of clouds,’
And if they were to see a piece of the heaven falling down, they would say: "Clouds gathered in heaps!"