Genesis 40:1-3, 14, 23

It came to pass after these things that the butler and the baker of the king of Egypt offended their lord, the king of Egypt. And Pharaoh was angry with his two officers, the chief butler and the chief baker. So he put them in custody in the house of the captain of the guard, in the prison, the place where Joseph was confined.

But remember me when it is well with you, and please show kindness to me; make mention of me to Pharaoh, and get me out of this house.

Yet the chief butler did not remember Joseph, but forgot him.