Sura al-Naḥl 16:125

ٱدْعُ إِلَىٰ سَبِيلِ رَبِّكَ بِٱلْحِكْمَةِ وَٱلْمَوْعِظَةِ ٱلْحَسَنَةِ وَجَٰدِلْهُم بِٱلَّتِى هِىَ أَحْسَنُ إِنَّ رَبَّكَ هُوَ أَعْلَمُ بِمَن ضَلَّ عَن سَبِيلِهِۦ وَهُوَ أَعْلَمُ بِٱلْمُهْتَدِينَ

idʿu ilā sabīli rabbika bil-ḥikmati wa-l-mawʿiẓati l-ḥasanati wa-jādilhum billatī hiya aḥsanu inna rabbaka huwa aʿlamu biman ḍalla ʿan sabīlihi wa-huwa aʿlamu bil-muhtadīna

Invite (all) to the Way of thy Lord with wisdom and beautiful preaching; and argue with them in ways that are best and most gracious: for thy Lord knoweth best, who have strayed from His Path, and who receive guidance.