A ruby can belong to two people, but it cannot be split without losing its value. Justice, then, does not consist in cutting the stone, but in finding a compensation that both brothers can consider fair.
The trial of the cadi
Riddle statement
Two brothers inherit a ruby that cannot be broken. Both have the same right over the stone, but only one can keep it.
To avoid an arbitrary decision, they go to the cadi. The cadi makes them pass separately and asks each one how much money the entire ruby is worth to him.
One answers that he values it at 120 dinars. The other, in 60 dinars.
The cadi knows that both have answered sincerely. He decides that the ruby should stay with the person who values it most, but he must compensate the other for his part fairly.
How many dinars should he pay?