وَأَنْ أَتْلُوَا۟ ٱلْقُرْءَانَ ۖ فَمَنِ ٱهْتَدَىٰ فَإِنَّمَا يَهْتَدِى لِنَفْسِهِۦ ۖ وَمَن ضَلَّ فَقُلْ إِنَّمَآ أَنَا۠ مِنَ ٱلْمُنذِرِينَ Qur’an An-Naml (27:92)Waan atluwa alqur a na famani ihtad a fainnam a yahtadee linafsihi waman d alla faqul innam a an a mina almun th ireen a
The duty of the Prophet and his adherents was, first, to accept Islam and become themselves shining examples of Allah's grace and mercy, as they in fact were, and secondly to preach that message and spread that Light to all around. It was not for them to force it on unwilling people: for any who rejected it would find their own spiritual loss in such rejection. But they must clearly warn them of the consequences.