Communication of divine message

وَقُلْ إِنِّىٓ أَنَا ٱلنَّذِيرُ ٱلْمُبِينُ

And say, "Indeed, I am the clear warner" -

عَلَىٰ قَلْبِكَ لِتَكُونَ مِنَ ٱلْمُنذِرِينَ

Upon your heart, [O Muḥammad] - that you may be of the warners -