Quran 52:38 from Surah At-Tur on Divine Marvels.
أَمۡ لَهُمۡ سُلَّمٞ يَسۡتَمِعُونَ فِيهِۖ فَلۡيَأۡتِ مُسۡتَمِعُهُم بِسُلۡطَٰنٖ مُّبِينٍ
English translation: Or for them (is) a stairway they listen therewith Then let bring their listener an authority clear
Transliteration: am lahum sullamun yastami'una fihi falyati mus'tami'uhum bisul'tanin mubinin