The limits of human obligation in da'wah

وَمَا عَلَى ٱلَّذِينَ يَتَّقُونَ مِنْ حِسَابِهِم مِّن شَىْءٍ وَلَـٰكِن ذِكْرَىٰ لَعَلَّهُمْ يَتَّقُونَ

And those who fear Allāh are not held accountable for them [i.e., the disbelievers] at all, but [only for] a reminder - that perhaps they will fear Him.