Quran 77:30 from Surah Al-Mursalaat on Divine Marvels.
ٱنطَلِقُوٓاْ إِلَىٰ ظِلّٖ ذِي ثَلَٰثِ شُعَبٖ
English translation: Proceed to a shadow having three columns
Transliteration: intaliqu ila zillin dhi thalathi shu'abin