Genesis 41:1-3

Now it happened at the end of two full years that Pharaoh dreamed that he was standing by the Nile. And lo, there came up out of the Nile seven [healthy] cows, sleek and handsome and fat; and they grazed in the reed grass [in a marshy pasture]. Then behold, seven other cows came up after them out of the Nile, ugly and gaunt and raw-boned, and stood by the fat cows on the bank of the Nile.