Genesis 37:28
27 Come, let’s sell him to the Ishmaelites, but let’s not lay a hand on him, for after all, he is our brother, our own flesh.” His brothers agreed. 28 So when the Midianite merchants passed by, Joseph’s brothers pulled him out of the cistern and sold him to the Ishmaelites for 20 pieces of silver. The Ishmaelites then took Joseph to Egypt. 29 Later Reuben returned to the cistern to find that Joseph was not in it! He tore his clothes,
Pseudo Jonathan Genesis 37:28
27 Come, let us sell him to the Arabs, and let our hand not be upon him to kill him, for he is our brother, our flesh.” And his brothers agreed. 28 Now, Midianite men, merchants, passed by, and pulling Joseph they raised him up out of the pit. They sold Joseph to the Arabs for twenty silver meah, and they bought sandals from them. And they brought Joseph to Egypt. 29 Reuben returned to the pit, for he had not been with them to eat when they sold him, since he was sitting and fasting because he had disarranged his father’s couch. And he had gone and sat in the mountains intending to return to the pit to raise him up and restore him to his father, hoping that he might win his favor. But when he returned and looked, behold, Joseph was not in the pit; he rent his clothes.
Amos 2:6
5 So I will set Judah on fire, and it will consume Jerusalem’s fortresses.” 6 This is what the Lord says: “Because Israel has committed three covenant transgressions—make that four—I will not revoke my decree of judgment. They sold the innocent for silver, the needy for a pair of sandals. 7 They trample on the dirt-covered heads of the poor; they push the destitute away. A man and his father go to the same girl; in this way they show disrespect for my moral purity.
Notes and References
"... Whatever the precise cause, Joseph's brothers did indeed hate him, and that is why they sold him as a slave to caravanners bound for Egypt. One minor detail is left hanging in this part of the story. The Bible says that Joseph's brothers 'sold him to the Ishmaelites for twenty pieces of silver' (Genesis 37:28), but it does not say what the brothers did with the money. A number of texts, however, contain the somewhat strange assertion that they then spent the money on shoes ... The source of this tradition originally had nothing to do with the story of Joseph. Once, in ancient times, the prophet Amos had rebuked the people of Israel in these terms ... in time, this general condemnation came to be understood as a specific reference to the story of Joseph. For Joseph certainly was a 'righteous man' - righteousness was his outstanding characteristic - and the traditional Hebrew text does say that he was sold 'for silver.' Who could Amos have been talking about if not him? ..."
Kugel, James L. The Bible as it Was (pp. 251-252) Harvard University Press, 1998