﴿ قُل لَّوْ كَانَ فِى ٱلْأَرْضِ مَلَٰٓئِكَةٌۭ يَمْشُونَ مُطْمَئِنِّينَ لَنَزَّلْنَا عَلَيْهِم مِّنَ ٱلسَّمَآءِ مَلَكًۭا رَّسُولًۭا ﴾

“Say: "If angels were walking about on earth as their natural abode, We would indeed have sent down unto them an angel out of heaven as Our apostle."”

(Say) O Muhammad, to the people of Mecca: (If there were in the earth angels walking secure, We had sent down for them from heaven an angel as messenger) for we send angel messengers only to angels and human messengers to humans.