The Sharia of Moses in the TORA
Part 2 - The 365 Prohibitions of the Tora
258 - SELLING A HEBREW BONDMAN BY PUBLIC AUCTION
By this prohibition, it is forbidden to sell a Hebrew bondman as Canaanite bondmen are sold, that is, to put him up for sale by public auction in the slave-market. This may on no account be done; the sale must take place privately and in proper conditions.