Genesis 41:17-21

So Pharaoh said to Joseph, “In my dream, I was standing on the bank of the Nile; and seven fat, sleek and handsome cows came up out of the river, and they grazed in the reed grass [of a marshy pasture]. Lo, seven other cows came up after them, very ugly and gaunt [just skin and bones]; such emaciated animals as I have never seen in all the land of Egypt. And the lean and ugly cows ate up the first seven fat cows. Yet when they had devoured them, it could not be detected that they had eaten them, because they were still as thin and emaciated as before. Then I awoke [but again I fell asleep and dreamed].