Surah As-Saffah (Those Angels Lines up in Ranks), Verse 49

كَاَنَّهُنَّ بَیْضٌ مَّكْنُوْنٌ ۟

Ka annahunna baidum maknoon

“As if they were (delicate) eggs closely guarded.”

Quran 37:49 (Yusuf Ali Translation)