Towards the end of Parashat Vayigash we read of Yosef's management of the Egyptian economy during the devastating seven-year famine. As the famine intensified, the Egyptian people offered more and more of their own possessions - and, ultimately, themselves - in exchange for food. At one stage, they retained ownership over their lands but sold their cattle: "They brought their livestock to Yosef, and Yosef gave them bread in exchange for the horses, for the stocks of sheep and cattle, and the donkeys; thus he provided them with bread that year in exchange for all their livestock" (47:17).