Quran 17:95 from Surah Al-Israa on Divine Marvels.
قُل لَّوۡ كَانَ فِي ٱلۡأَرۡضِ مَلَٰٓئِكَةٞ يَمۡشُونَ مُطۡمَئِنِّينَ لَنَزَّلۡنَا عَلَيۡهِم مِّنَ ٱلسَّمَآءِ مَلَكٗا رَّسُولٗا
English translation: Say If (there) were in the earth Angels walking securely surely We (would) have sent down to them from the heaven an Angel (as) a Messenger
Transliteration: qul law kana fi al-ardi malaikatun yamshuna mut'ma-innina lanazzalna alayhim mina al-samai malakan rasulan