Genesis 37:28-30

Then there passed by Midianites merchantmen; and they drew and lifted up Joseph out of the pit, and sold Joseph to the Ishmeelites for twenty pieces of silver: and they brought Joseph into Egypt. 

And Reuben returned unto the pit; and, behold, Joseph was not in the pit; and he rent his clothes. 

And he returned unto his brethren, and said, The child is not; and I, whither shall I go?