Genesis 41:20-24

and the thin and ugly cows ate the first seven fat cows.

Yet when they had devoured them, it could not be detected that they had devoured them, for they were just as ugly as before. Then I awoke.

I saw also in my dream, and behold, seven ears of grain, full and good, came up on a single stalk;

and behold, seven ears, withered, thin, and scorched by the east wind sprouted up after them;

and the thin ears swallowed the seven good ears. Then I told it to the soothsayer priests, but there was no one who could explain it to me.”