Genesis 41:3-4

41:3 Then seven bad-looking, thin cows were coming up after them from the Nile, and they stood beside the other cows at the edge of the river. 41:4 The bad-looking, thin cows ate the seven fine-looking, fat cows. Then Pharaoh woke up.

Genesis 41:6-7

41:6 Then seven heads of grain, thin and burned by the east wind, were sprouting up after them. 41:7 The thin heads swallowed up the seven healthy and full heads. Then Pharaoh woke up and realized it was a dream.

Genesis 41:27

41:27 The seven lean, bad-looking cows that came up after them represent seven years, as do the seven empty heads of grain burned with the east wind. They represent seven years of famine.