A woman was weeping and mourning over the grave of her dead husband for a long time. Close by stood a gallows and a watchman was appointed by the king to see that none of the bodies should be stolen. He saw the woman there, spoke to her and induced her to do his bidding. Whan he returned to the gallows he found that the body had disappeared. So he came back to the woman and told her that he feared for his life, since the king would surely kill him. The woman then told him to take the body of her dead husband and hang it up instead, and she assisted him in dragging the body from the grave.
The Widow Who Traded Her Husband's Corpse for a Watchman
Gaster, The Exempla of the Rabbis (1924), No. 442