79مَّآ أَصَابَكَ مِنْ حَسَنَةٍ فَمِنَ ٱللَّهِ ۖ وَمَآ أَصَابَكَ مِن سَيِّئَةٍ فَمِن نَّفْسِكَ ۚ وَأَرْسَلْنَـٰكَ لِلنَّاسِ رَسُولًا ۚ وَكَفَىٰ بِٱللَّهِ شَهِيدًا
80مَّن يُطِعِ ٱلرَّسُولَ فَقَدْ أَطَاعَ ٱللَّهَ ۖ وَمَن تَوَلَّىٰ فَمَآ أَرْسَلْنَـٰكَ عَلَيْهِمْ حَفِيظًا
[79-80] We have sent you, O Muhammad, as a Messenger to mankind, and Allah's witness suffices for this. Whoever obeys the Messenger, in fact, obeys Allah and whoever turns away from him (is accountable for his deeds); anyhow We have not sent you to be keeper over them.110
110That is, "They themselves are responsible for their deeds and you will not be answerable for them. What you have been entrusted with, is to convey to them the commandments and instructions from God. And you have done that admirably well. Now it is not your obligation to force them to adopt the right way, and if they do not follow the Guidance they are receiving through you, you shall not be held responsible for their disobedience."