A thief steals the gold bar sells it off at price higher than the value of gold when he stole it. That is, the market value of the gold increased in his possession, either because the value of the ...
A knas (penalty) is never paid through the admission of the one who would pay it. For example, if someone steals $1 he has to pay $2 back, but if he returns the money by himself, he only pays $1 back, ...
If one stole a hundred dollars in regular cash (e.g. no rare bill editions), and still has those bills, does he have to return those particular bills or can he return any hundred dollars?