Chapt 83 'Defrauding', is the last of the Late Meccan Suras, and I really get the feeling that Mohamed has shot his wad. He's not saying anything new anymore, and this chapter is just the same old chorus.
1-6 Don't cheat;
7-9 god keeps a record.
10-17 Unbleevers, TAGTH
18-21 repeats all that, just using a different name for the record book:
(sijin = prison register; iliyin = register. wev)
22-28 bleevers get wine in heaven
29-36 you'll be sorry on Doomday. (JAC)
...And that's the last of Mo's preaching in Mecca. Big-ass changes coming up.