And those who have no knowledge say: Why does not Allah speak to us or a sign come to us? Even thus said those before them, the like of what they say; their hearts are all alike. Indeed We have made the communications clear for a people who are sure.

Have you not considered how Allah sets forth a parable of a good word (being) like a good tree, whose root is firm and whose branches are in heaven,

And the parable of an evil word is as an evil tree pulled up from the earth's surface; it has no stability.

Say: If the sea were ink for the words of my Lord, the sea would surely be consumed before the words of my Lord are exhausted, though We were to bring the like of that (sea) to add