Dawah (Islamic call)

ٱذْهَب بِّكِتَـٰبِى هَـٰذَا فَأَلْقِهْ إِلَيْهِمْ ثُمَّ تَوَلَّ عَنْهُمْ فَٱنظُرْ مَاذَا يَرْجِعُونَ

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