MacLaren
Addicted to ArboristSite
Ask questions about origin (I usually ask people 3 times if the saw is stolen).
Write up a simple bill of sale with the serial numbers and make him sign it..... you have covered your ass at that point against criminal liabilty for receiving.
Morally may be another story, but that's between you and the Big Guy Upstairs.
Imo, that's very good advice.