sell something for a mess of pottage
sell something for a mess of pottagesell something for a ridiculously small amount.
This expression comes from the biblical story of Esau, who sold his birthright to his brother Jacob in return for a dish of lentil broth (Genesis 25:29–34). Mess is a term for a serving of semi-liquid food and pottage is an archaic word for soup or stew. Although the phrase is recorded from 1526 it does not occur in the Authorized Version of the Bible ( 1611 ); it does, however, appear in chapter headings in the Bibles of 1537 and 1539 and in the Geneva Bible of 1560 .