م ز نm-z-n
— مُزْنmuzn: the white cloud from which rain falls. The lexicographers say that مُزْنَةmuznah is used specifically of the rain-bearing cloud, while «سَحَابsaḥāb» is general. Only once in the Quran, in the context of a rhetorical interrogation (istifhām taqrīrī): ﴿ءَأَنْتُمْ أَنْزَلْتُمُوْهُ مِنَ الْمُزْنِ أَمْ نَحْنُ الْمُنْزِلُوْنَ﴾ (Al-Wāqiʿah 56:69).