The [instability of the] life in this world can be exemplified by the following [true] story: Once upon a time, I sent rain from the sky which caused the crops (which sustains man and animals equally) cover the earth. Then, at the height of the abundance (when the land owners were happy, presuming that they are going to be blessed with an unusual profit), I sent a catastrophe (in the night or the day [whichever you choose]) that all of a sudden destroyed the whole land as though nothing existed there before. See how clearly I make my points for those people who contemplate.