An-Naml 27:28

ٱذْهَب بِّكِتَـٰبِى هَـٰذَا فَأَلْقِهْ إِلَيْهِمْ ثُمَّ تَوَلَّ عَنْهُمْ فَٱنظُرْ مَاذَا يَرْجِعُونَ

Idh'hab bikitābī hādhā fa-alqih ilayhim thumma tawalla ʿanhum fa-unẓur mādhā yarjiʿūna

Take this letter of mine and deliver it to them. Then leave them and see what [answer] they will return."