Nahj al-Balāgha
Hadith 511وَ قَوْلُهُ: «وَلا قَزَع رَبابُها» الْقَزَعُ: الْقِطَعُ الصِّغارُ الْمُتَفَرِّقَةُ مِنَ السَّحابِ.
His words “wa lā qaza`in rababuha”. Here “al-qaza`” means small pieces of cloud scattered all round.