﴿ ٱذْهَب بِّكِتَٰبِى هَٰذَا فَأَلْقِهْ إِلَيْهِمْ ثُمَّ تَوَلَّ عَنْهُمْ فَٱنظُرْ مَاذَا يَرْجِعُونَ ﴾

“Go with this my letter and convey it to them; and thereafter withdraw from them and see what [answer] they return.””

Please check ayah 27:31 for complete tafsir.