18:19Even so, We awakened them, so that they may ask one another. A speaker among them said, “How long have you stayed?” They said, “We have stayed a day, or part of a day.” They said, “Your Lord knows best how long you have stayed.” “Send one of you to the city, with this money of yours, and let him see which food is most suitable, and let him bring you some provision thereof. And let him be gentle, and let no one become aware of you.”

18:45And cite for them the parable of the present life: it is like water that We send down from the sky; the plants of the earth absorb it; but then it becomes debris, scattered by the wind. God has absolute power over everything.

18:56We send the messengers only as deliverers of good news and warners. Those who disbelieve argue with false argument, in order to defeat the truth thereby. They take My Verses, and the warnings, for a joke.