Genesis 37:27-31

Come, let’s sell him to the Ishmaelites and not lay our hands on him; after all, he is our brother, our own flesh and blood.” His brothers agreed. So when the Midianite merchants came by, his brothers pulled Joseph up out of the cistern and sold him for twenty shekels of silver to the Ishmaelites, who took him to Egypt. When Reuben returned to the cistern and saw that Joseph was not there, he tore his clothes. He went back to his brothers and said, “The boy isn’t there! Where can I turn now?” Then they got Joseph’s robe, slaughtered a goat and dipped the robe in the blood.