The present, worldly life is like this: We send down water from the sky, and the earth’s vegetation, of which humans and animals eat, mingles with it, until, when the earth has taken on her ornaments and has been embellished, and its inhabitants suppose that they are its masters with a free hand over the earth, Our command comes upon it by night or day unexpectedly, and We cause it to become like a field mown down, as if it had not flourished the previous day. Thus We set out in detail the signs (the signposts of Our way and the relevant commands and guidance included in the Qur’an) for a people who reflect (on them and draw the necessary lesson).