Quran 27:28 from Surah An-Naml on Divine Marvels.
ٱذۡهَب بِّكِتَٰبِي هَٰذَا فَأَلۡقِهۡ إِلَيۡهِمۡ ثُمَّ تَوَلَّ عَنۡهُمۡ فَٱنظُرۡ مَاذَا يَرۡجِعُونَ
English translation: Go with my letter this and deliver it to them Then turn away from them and see what they return
Transliteration: idh'hab bikitabi hadha fa-alqih ilayhim thumma tawalla anhum fa-unzur madha yarji'una