Quran 21:108 — The Prophets (Al-Anbya')

Proclaim, "I have been given divine inspiration that your god is one god. Will you then submit?"

[21:107] We have sent you out of mercy from us towards the whole world.

[21:109] If they turn away, then say, "I have warned you sufficiently, and I have no idea how soon or late (the retribution) will come to you.